AnThroM

testing the relation between Theory-of-Mind network activation and dispositional anthropomorphism
by Ruud Hortensius and Michaela Kent (University of Glasgow) - June 2019 - …

1. Details

1.1 Data

Data of the Theory-of-Mind functional localiser and Individual Differences in Anthropomorphism Questionnaire are from five different studies.

Dataset_1: Bangor Imaging Unit; EMBOTS; n=29 (including 1 pilot scan); full dataset and publication: Cross…Hortensius (2019) PTRB.

Dataset_2: Centre for Cognitive NeuroImaging; SHAREDBOTS; n=35 (including 2 pilot scans) publication: Hortensius & Cross, in preparation.

Dataset_3: Centre for Cognitive NeuroImaging; Two studies with the same parameters: n=22 (including 2 pilot scans). Social_Gradient_1; n=10 (pilot experiment) and BOLDlight; n=12.

Dataset_4: Centre for Cognitive NeuroImaging; GAMEBOTS; n=22.

Get info for table S1:

library("tidyverse")

#load own data
DF.dataset1 <- read_tsv(file = "/Volumes/Project0255/dataset_1/participants.tsv")
DF.dataset2 <- read_tsv(file = "/Volumes/Project0255/dataset_2/participants.tsv")
DF.dataset3 <- read_tsv(file = "/Volumes/Project0255/dataset_3/participants.tsv")
DF.dataset4 <- read_tsv(file = "/Volumes/Project0255/dataset_4/participants.tsv")

#combine data
bind_rows(DF.dataset1, DF.dataset2, DF.dataset3,  DF.dataset4, .id = "dataset") %>%
  group_by(dataset) %>% 
  summarise(mean = mean(age), 
            sd = sd(age))
bind_rows(DF.dataset1, DF.dataset2, DF.dataset3,  DF.dataset4, .id = "dataset") %>%
  group_by(dataset, sex) %>% 
  tally()

1.2 Neuroimaging procedure

All participants completed a Theory-of-Mind localiser (Jacoby et al., 2016; Richardson et al. 2018) and an anatomical scan either in the same session or in two seperate sessions. During the localiser participants passively viewed a short 5.6 min animated film (Partly Cloudy). This movie includes scenes depicting pain (e.g. an alligator biting the main character) and events that trigger mentalizing (e.g. the main character revealing its intention). For dataset_3 and dataset_4 a fieldmap was collected as well. At the end of each experiment participants completed the Individual Differences in Anthropomorphism Questionnaire (IDAQ) (Waytz et al., 2010).

  • BOLD:
    Dataset_1: 3x3x3.5mm voxels, 32 slices, repetition time = 2s, echo time = 30ms
    Dataset_2: 3mm isotropic, 37 slices, TR = 2s, TE = 30ms
    Dataset_3: 2mm isotropic, 68 slices, TR = 2s, TE = 26ms
    Dataset_4: 2.75 x 2.75 x 4mm, 32 slices, TR = 2s, TE = 13 and 31ms

  • T1W:
    Dataset_1: 1mm isotropic resolution, TR = 12ms, TE = 3.47 / 5.15 / 6.83 / 8.52 / 10.20ms (SENSE)
    Dataset_2 - 4: 1mm isotropic resolution, TR = 2.3s, TE = 29.6ms (ADNI)

  • Fieldmaps:
    Dataset_1: no, so –use-syn-sdc
    Dataset_2: no, so –use-syn-sdc
    Dataset_3: yes
    Dataset_4: yes

1.3 To do

  • remove Dicoms after BIDS dataset creation
  • run formal analyses (Bayesian)

Note: for the code chunk the language is listed, but all except for r-chunks are executed in the terminal

2. BIDS dataset

2.1 Creating the BIDS dataset

For this you need HeuDiConv Heuristic DICOM Converter.
Based on the tutorial by Franklin Feingold.

Dowload the latest version of Heudiconv (we used 0.6.0.dev1):

docker pull nipy/heudiconv:latest

If on the GRID do:

singularity pull docker://nipy/heudiconv:latest

Create the info file (dataset_2 - 4):

docker run --rm -it -v /Volumes/Project0255/:/base nipy/heudiconv:latest -d /base/dataset_3/sourcedata/sub-{subject}/*.IMA -o /base/dataset_3 -f convertall -s 315 -c none --overwrite

For dataset_1 we first need to convert the .dcm from jpeg-2000 lossless to uncompressed dcm (thanks to Michele Svanera for the code):

python3 convert_all_compressed_dicom.py

Create the info file (dataset_1):

docker run --rm -it -v /Volumes/Project0255/:/base nipy/heudiconv:latest -d /base/dataset_1/sourcedata/sub-{subject}/ses-{session}/*.dcm -o /base/dataset_1 -f convertall -s 129 -ss 01 -c none --overwrite

Get the info file:

cp /Volumes/Project0255/code/.heudiconv/301/info/dicominfo.tsv /Volumes/Project0255/code

2.2 Create the heuristic file

Create the following python file and save it in the code folder. There is one functional task (func_movie) and one anatomical (t1w). Dataset_3 and 4 have a field map as well (fmap_phase and fmap_magnitude)

Create a heuristic to automatically convert the files:

import os
def create_key(template, outtype=('nii.gz',), annotation_classes=None):
    if template is None or not template:
        raise ValueError('Template must be a valid format string')
    return template, outtype, annotation_classes
def infotodict(seqinfo):
    """Heuristic evaluator for determining which runs belong where
    allowed template fields - follow python string module:
    item: index within category
    subject: participant id
    seqitem: run number during scanning
    subindex: sub index within group
    session: session id (only for dataset_1)
    """
    
    t1w1 = create_key('sub-{subject}/{session}/anat/sub-{subject}_{session}_T1w')
    func_movie1 = create_key('sub-{subject}/{session}/func/sub-{subject}_{session}_task-movie_bold')

    t1w = create_key('sub-{subject}/anat/sub-{subject}_T1w')
    func_movie = create_key('sub-{subject}/func/sub-{subject}_task-movie_bold')
    func_movie_echo_1 = create_key('sub-{subject}/func/sub-{subject}_task-movie_echo-1_bold')
    func_movie_echo_2 = create_key('sub-{subject}/func/sub-{subject}_task-movie_echo-2_bold')
    fmap_phase = create_key('sub-{subject}/fmap/sub-{subject}_phasediff')
    fmap_magnitude = create_key('sub-{subject}/fmap/sub-{subject}_magnitude')
    
    info = {t1w1: [], func_movie1: [], t1w: [], func_movie: [], fmap_phase: [], fmap_magnitude: [],
            func_movie_echo_1: [], func_movie_echo_2: []} 
    
    for idx, s in enumerate(seqinfo):
        if ('T1W_1mm_sag SENSE' in s.protocol_name):
            info[t1w1].append(s.series_id)
        if ('ToM_PartlyCloudy SENSE' in s.protocol_name):
            info[func_movie1].append(s.series_id)
        if ('t1_mpr_ns_sag_iso_ADNI_32ch' in s.protocol_name):
            info[t1w].append(s.series_id)
        if ('t1_mpr_ns_sag_P2_ADNI_32ch' in s.protocol_name):
            info[t1w].append(s.series_id)
        if (s.dim4 == 175) and ('FMRI_MB2_p2_2MMISO_TR2_movie' in s.protocol_name):
            info[func_movie].append(s.series_id)
        if (s.dim4 == 175) and ('FMRI_MB2_movie_p2_2MMISO_TR2' in s.protocol_name):
            info[func_movie].append(s.series_id)
        if (s.dim4 == 170) and ('ep2d_ToM_Loc' in s.protocol_name):
            info[func_movie].append(s.series_id)
        if (s.dim4 == 175) and ('ep2d_ToM_Loc' in s.protocol_name):
            info[func_movie].append(s.series_id)
        if (s.dim4 == 175) and ('ep2d_ToM_Loc_boldTR2' in s.protocol_name):
            info[func_movie].append(s.series_id)
        if (s.TE == 13) and ('BP_ep2d_multiecho_32ch_p3_TOM' in s.protocol_name):
            info[func_movie_echo_1].append(s.series_id)
        if (s.TE == 31.36) and ('BP_ep2d_multiecho_32ch_p3_TOM' in s.protocol_name):
            info[func_movie_echo_2].append(s.series_id)
        if (s.dim3 == 92) and ('gre_field_mapping_AAH' in s.protocol_name):
            info[fmap_magnitude].append(s.series_id)
        if (s.dim3 == 46) and ('gre_field_mapping_AAH' in s.protocol_name):
            info[fmap_phase].append(s.series_id)
        if (s.dim3 == 64) and ('gre_field_mapping_AAH' in s.protocol_name):
            info[fmap_magnitude].append(s.series_id)
        if (s.dim3 == 32) and ('gre_field_mapping_AAH' in s.protocol_name):
            info[fmap_phase].append(s.series_id)
    return info

Use the heuristic file to convert the Dicom files to .nii.gz (nifti) and create .json files:

docker run --rm -it -v /Volumes/Project0255/:/base nipy/heudiconv:latest -d /base/dataset_4/sourcedata/sub-{subject}/*.IMA -o /base/dataset_4 -f /base/code/heuristic_anthrom.py -s 401 -c dcm2niix -b --overwrite

For dataset_1 (for dataset_1 add ses-{session}/ and –ss 01 and .dcm). Movie for sub-101 and 102 is in ses-02:

docker run --rm -it -v /Volumes/Project0255/:/base nipy/heudiconv:latest -d /base/dataset_1/sourcedata/sub-{subject}/ses-{session}/*.dcm -o /base/dataset_1 -f /base/code/heuristic_anthrom.py -s 121 -ss 02 -c dcm2niix -b --overwrite

On the grid do (Sub-116 was done manually in dcm2niigui):

Type in bash before running

Dataset_1:

singularity run -B /analyse/Project0255/:/base /analyse/Project0255/my_images/heudiconv_latest.sif -d /base/dataset_1/sourcedata/sub-{subject}/ses-{session}/*.dcm -o /base/dataset_1/ -f /base/code/heuristic_anthrom.py -s 116 -ss 01 -c dcm2niix -b --overwrite

Dataset_2 - 4:

singularity run -B /analyse/Project0255/:/base /analyse/Project0255/my_images/heudiconv_latest.sif -d /base/dataset_2/sourcedata/sub-{subject}/*.IMA -o /base/dataset_2/ -f /base/code/heuristic_anthrom.py -s 201 -c dcm2niix -b --overwrite

2.3 Anonymize the data

Deface using Pydeface:

#!/bin/bash

set -e 
####For loop that defaces the MRI per subject and replaces the old MRI with the new defaced MRI
rootfolder=/Volumes/Project0255/dataset_4

for subj in 401; do
    echo "Defacing participant $subj"
pydeface ${rootfolder}/sub-${subj}/anat/sub-${subj}_T1w.nii.gz
rm -f ${rootfolder}/sub-${subj}/anat/sub-${subj}_T1w.nii.gz
mv ${rootfolder}/sub-${subj}/anat/sub-${subj}_T1w_defaced.nii.gz ${rootfolder}/sub-${subj}/anat/sub-${subj}_T1w.nii.gz 
done

For dataset_1: ses-01: 101 102 103 107 112 113 117 118 119 122 123 124 128 ses-02: 104 105 106 108 109 110 111 115 116 120 121 125 126 127

#!/bin/bash

set -e 
rootfolder=/Volumes/Project0255/dataset_1

for subj in 129; do
    echo "Defacing participant $subj"
for session in 01; do
for echo in 1 2 3 4 5; do
pydeface ${rootfolder}/sub-${subj}/ses-${session}/anat/sub-${subj}_ses-${session}_echo-${echo}_T1w.nii.gz
rm -f ${rootfolder}/sub-${subj}/ses-${session}/anat/sub-${subj}_ses-${session}_echo-${echo}_T1w.nii.gz 
mv ${rootfolder}/sub-${subj}/ses-${session}/anat/sub-${subj}_ses-${session}_echo-${echo}_T1w_defaced.nii.gz ${rootfolder}/sub-${subj}/ses-${session}/anat/sub-${subj}_ses-${session}_echo-${echo}_T1w.nii.gz 
done
done
done

2.4 Update the .json file for the fmaps for dataset_3 and dataset_4

You need to specify “IntendedFor” field in the _phasediff.json files to point which scans the estimated fieldmap should be applied to.

Run the following script (thanks to Michele Svanera for the code):

python change_json.py

2.5 Combine the dual-echo runs for dataset_4

For dataset_4 we need to combine the two echo’s (see NeuroStar for more info. We created a dual_sum volume by adding the two images together (see Halai et al. 2014.

Run the following script (thanks to Tyler Morgan for the code):

python sum_echo.py

2.6 Theory-of-Mind event protocols

Create tsv file for functional localiser. Event coding (in s; 10s of fixation before movie starts; accounting for hemodynamic lag) is based on Richardson et al. 2018 - reverse correlation analyses.

Note: For sub-322 the trigger was at the start of the movie (thus create a different tsv, with event - 10s). Check the triggers for dataset_1.

PartlyCloudy <- data.frame(onset = c(86, 98, 120, 176, 238, 252, 300, 70, 92, 106, 136, 194, 210, 228, 262, 312), #create the events (same for every sub)
                           duration = c(4, 6, 4, 16, 6, 8, 6, 4, 2, 4, 10, 4, 12, 6, 6, 4),
                           trial_type = c(rep("mental",7), rep("pain",9)))

#dataset_1
for (sub in 102:129){ #note: localisers for sub-101 are in ses-02
  filename = paste("/Volumes/Project0255/dataset_1/sub-", sub, "/ses-01/func/sub-", sub, "_ses-01_task-movie_events.tsv", sep ="")
write.table(PartlyCloudy, file = filename, sep="\t", row.names = FALSE, quote = FALSE)
}
#dataset_2
for (sub in 201:235){ 
  filename = paste("/Volumes/Project0255/dataset_2/sub-", sub, "/func/sub-", sub, "_task-movie_events.tsv", sep ="")
write.table(PartlyCloudy, file = filename, sep="\t", row.names = FALSE, quote = FALSE)
}
#dataset_3
for (sub in 301:322){ #note: localisers for sub-322 should have t-10 (no trigger) <-manually correct this
  filename = paste("/Volumes/Project0255/dataset_3/sub-", sub, "/func/sub-", sub, "_task-movie_events.tsv", sep ="")
write.table(PartlyCloudy, file = filename, sep="\t", row.names = FALSE, quote = FALSE)
}
#dataset_4
for (sub in 401:422){ 
  filename = paste("/Volumes/Project0255/dataset_4/sub-", sub, "/func/sub-", sub, "_task-movie_events.tsv", sep ="")
write.table(PartlyCloudy, file = filename, sep="\t", row.names = FALSE, quote = FALSE)
}

2.6 BIDS validation

Use the BIDS-Validator to check if the dataset is BIDS compliant:

docker run -ti --rm -v /Volumes/Project0255/dataset_4:/data:ro bids/validator /data

3. Preprocessing

3.1 Run MRQIC

MRIQC is a docker tool to do quality control of the data. More info here.

MRIQC 0.14.2 was used:

docker run -it --rm -v /Volumes/Project0255/dataset_1/:/data:ro -v /Volumes/Project0255/dataset_1/derivatives/mriqc:/out poldracklab/mriqc:0.14.2 /data /out participant --participant-label 101 -m T1w bold --ica --fft-spikes-detector 

On the grid do (cd in /analyse folder):

singularity run --cleanenv /analyse/Project0255/my_images/mriqc-0.14.2.simg /analyse/Project0255/dataset_1 /analyse/Project0255/dataset_1/derivatives/mriqc participant --participant-label 123 -m T1w bold --ica --fft-spikes-detector -w /analyse/Project0255/work

Run it seperately for the datasets. Change participant to group to create the group reports:

docker run -it --rm -v /Volumes/Project0255/dataset_4/:/data:ro -v /Volumes/Project0255/dataset_4/derivatives/mriqc:/out poldracklab/mriqc:0.14.2 /data /out group

3.2 Compare MRIQC

Plot the output. This is based on MRIQCeption. The MRIQCeption Visualization by Catherine Walsh was adapted. Adjust the filter if you want to look at different measures.

Adjust this to your liking (e.g. bold: fd_mean, fd_perc, dvars_std, dvars_vstd, gcor, tsnr, t1w: cjv, cnr, snr, efc, inu, wm2max, fwhm) and modality (bold or t1w):

QCmeasure <- "fd_mean" 
modality <- "bold"

Run the following code. Change the script below to load the group results for the different datasets:

#libraries
library("tidyverse")
source("/Volumes/Project0255/code/R_rainclouds.R")

#load own data
DF.dataset1  <- read_tsv(file = paste("/Volumes/Project0255/dataset_1/derivatives/mriqc/group_", modality, ".tsv", sep ="")) %>%
  gather("measure", "value", 2:46) %>%
  select("bids_name","measure", "value")

DF.dataset2 <- read_tsv(file = paste("/Volumes/Project0255/dataset_2/derivatives/mriqc/group_", modality, ".tsv", sep ="")) %>%
  gather("measure", "value", 2:46) %>%
  select("bids_name","measure", "value")

DF.dataset3 <- read_tsv(file = paste("/Volumes/Project0255/dataset_3/derivatives/mriqc/group_", modality, ".tsv", sep ="")) %>%
  gather("measure", "value", 2:46) %>%
  select("bids_name","measure", "value")

DF.dataset4 <- read_tsv(file = paste("/Volumes/Project0255/dataset_4/derivatives/mriqc/group_", modality, ".tsv", sep ="")) %>%
  gather("measure", "value", 2:46) %>%
  select("bids_name","measure", "value") 

#select the most relevant measures
#selectionMeasure <- c("snr", "tsnr", "efc", "fber", "gsr_x", "gsr_y", "dvars_nstd", "dvars_std", "dvars_vstd", "gcor", "fd_mean", "fd_number", "fd_percentage", "spikes", "aor", "aqi")

#combine data
DF.full <- bind_rows(DF.dataset1, DF.dataset2, DF.dataset3,  DF.dataset4, .id = "dataset") %>%
  group_by(dataset) %>% 
  filter(measure == QCmeasure) #%in% c(selectionMeasure)) 

#create raincloud plot (check out the [github](https://github.com/RainCloudPlots/) or [preprint](https://wellcomeopenresearch.org/articles/4-63/v1)
p <- ggplot(DF.full,aes(x=dataset,y=value,fill=dataset))+
  geom_flat_violin(position=position_nudge(x = .2, y = 0),adjust =2, trim = FALSE, alpha = .5, colour = NA)+
  geom_point(aes(colour = dataset), position=position_jitter(width = .05), size = .5, shape = 20)+
  geom_boxplot(aes(x=dataset,y=value),position=position_nudge(x = .1, y = 0),outlier.shape = NA, alpha = .5, width = .1, colour = "black")+ 
  #facet_wrap(. ~ dataset) +
  theme_classic() + ylab(QCmeasure) + scale_fill_brewer(palette = "Reds") +
  scale_colour_brewer(palette = "Reds") + ggtitle(paste("Comparison of", modality, "QC measure", QCmeasure, "between datasets")) +
  facet_wrap(~measure)
p

3.3 fMRIprep

fMRIprep is a docker tool for preprocessing of the fMRI data. More info here

fMRIprep version 1.5.2 was used on a local iMac.

If you run into memory problems you can use –skip_bids_validation; skipped the –write-graph flag to save space, and –use-syn-sdc only for dataset_1 and datatset_2.

If run on the GRID, cd into the analyse folder and run:

singularity run --cleanenv /analyse/Project0255/my_images/fmriprep-1.5.2.simg /analyse/Project0255/dataset_1/ /analyse/Project0255/dataset_1/derivatives participant --participant-label sub-129 --fs-license-file /analyse/Project0255/my_images/license.txt --skip_bids_validation --use-syn-sd --fs-no-reconall -w /analyse/Project0255/work/compute00

Resize functional files for two participants (sub-117 and sub-125) from dataset_1 (sub-{sub}_ses-01_task-movie_space-MNI152NLin2009cAsym_desc-preproc_bold.nii) to allow for group comparison (run this in MATLAB):

voxsiz = [3 3 3.5]; % new voxel size {mm}
V = spm_select([1 Inf],'image');
V = spm_vol(V);
for i=1:numel(V)
   bb        = spm_get_bbox(V(i));
   VV(1:2)   = V(i);
   VV(1).mat = spm_matrix([bb(1,:) 0 0 0 voxsiz])*spm_matrix([-1 -1 -1]);
   VV(1).dim = ceil(VV(1).mat \ [bb(2,:) 1]' - 0.1)';
   VV(1).dim = VV(1).dim(1:3);
   spm_reslice(VV,struct('mean',false,'which',1,'interp',0)); % 1 for linear
end

4. Analyses

4.1 Example script for first-level analysis

Example MATLAB script (dataset 3):

%========================================================================
%     SPM first-level analysis for fmriprep data in BIDS format
%========================================================================
%     This script is written by Ruud Hortensius and Michaela Kent
%     (University of Glasgow). Based upon a script written by 
%     Shengdong Chen (ACRLAB) and Stephan Heunis (TU Eindhoven).
%
%     Added: loop for runs
%     Parameters as specified by Saxelab: https://saxelab.mit.edu/theory-mind-and-pain-matrix-localizer-movie-viewing-experiment
%
%     Last updated: January 2020
%========================================================================

clear all 

%% Inputdirs
BIDS = spm_BIDS('/Volumes/Project0255/dataset_3/'); % Parse BIDS directory (easier to query info from dataset)
BIDSpreproc=fullfile(BIDS.dir,'derivatives/fmriprep'); % get the preprocessed directory

%sublist = spm_BIDS(BIDS,'subjects') %number of subjects
sublist = transpose(BIDS.participants.participant_id) %get subject list including the 'sub'
subex = [] 
sublist(subex) = []; %update the subjects

taskid='movie'; %specify the task to be analysed

numScans=175;  %The number of volumes per run <---

TR = 2;     % Repetition time, in seconds <---
unit='secs'; % onset times in secs (seconds) or scans (TRs)

%% Outputdirs
outputdir=fullfile(BIDS.dir,'derivatives/bids_spm/first_level');  % root outputdir for sublist
spm_mkdir(outputdir,char(sublist), char(taskid)); % create output directory

%% Loop for sublist
spm('Defaults','fMRI'); %Initialise SPM fmri
spm_jobman('initcfg');  %Initialise SPM batch mode

for i=1:length(sublist)
    
    
    %% Output dirs where you save SPM.mat
    subdir=fullfile(outputdir,sublist{i},taskid);
    
    %% Basic parameters
    matlabbatch{1}.spm.stats.fmri_spec.dir = {subdir};
    matlabbatch{1}.spm.stats.fmri_spec.timing.units = unit; % specified above
    matlabbatch{1}.spm.stats.fmri_spec.timing.RT = TR; % specified above
    matlabbatch{1}.spm.stats.fmri_spec.timing.fmri_t = 68; %<--- look into this
    matlabbatch{1}.spm.stats.fmri_spec.timing.fmri_t0 = 34; %<--- look into this
    
    %% Load input files for task specilized
    sub_inputdir=fullfile(BIDSpreproc,sublist{i},'func');
    sub_inputdirA=fullfile(BIDSpreproc,sublist{i},'anat');
    
    %------------------------------------------------------------------
    func=[sub_inputdir,filesep,sublist{i},'_task-',taskid,'_space-MNI152NLin2009cAsym_desc-preproc_bold.nii.gz'];
    func_nii=[sub_inputdir,filesep,sublist{i}, '_task-',taskid,'_space-MNI152NLin2009cAsym_desc-preproc_bold.nii'];
    if ~exist(func_nii,'file'), gunzip(func)
    end
    run_scans = spm_select('Expand',func_nii);
    
    matlabbatch{1}.spm.stats.fmri_spec.sess(1).scans = cellstr(run_scans);
    
    % Load the condition files
    events = spm_load([BIDS.dir,filesep,sublist{i},'/func/', sublist{i},'_task-',taskid,'_events.tsv']) %load TSV condition file
    
    names{1} = 'mental';
    t = strcmp(names{1}, events.trial_type)
    onsets{1} = transpose(events.onset(t));
    durations{1} = transpose(events.duration(t));
    
    names{2} = 'pain';
    t = strcmp(names{2}, events.trial_type)
    onsets{2} = transpose(events.onset(t));
    durations{2} = transpose(events.duration(t));
    
    
    file_mat = [subdir,filesep,sublist{i},'_task-',taskid,'_conditions.mat'];
    save(file_mat, 'names', 'onsets', 'durations')
    matlabbatch{1}.spm.stats.fmri_spec.sess(1).cond = struct('name', {}, 'onset', {}, 'duration', {}, 'tmod', {}, 'pmod', {}, 'orth', {});
    matlabbatch{1}.spm.stats.fmri_spec.sess(1).multi = {file_mat};
    
    % Confounds file
    confounds=spm_load([sub_inputdir,filesep,sublist{i},'_task-',taskid,'_desc-confounds_regressors.tsv'])  ;
    confounds_matrix=[confounds.framewise_displacement, confounds.a_comp_cor_00,confounds.a_comp_cor_01,confounds.a_comp_cor_02,confounds.a_comp_cor_03, confounds.a_comp_cor_04,confounds.a_comp_cor_05, confounds.trans_x, confounds.trans_y, confounds.trans_z, confounds.rot_x, confounds.rot_y, confounds.rot_z];
    confounds_name=[subdir,filesep,sublist{i},'_task-',taskid,'_acomcorr.txt'];
    
    confounds_matrix(isnan(confounds_matrix)) = 0 % nanmean(confounds_matrix); %check this <-----
    
    if ~exist(confounds_name,'file'), dlmwrite(confounds_name,confounds_matrix)
    end
    matlabbatch{1}.spm.stats.fmri_spec.sess(1).multi_reg = {confounds_name};
    matlabbatch{1}.spm.stats.fmri_spec.sess(1).hpf = 128; % High-pass filter (hpf) without using consine
    
    %% Model  (Default)
    matlabbatch{1}.spm.stats.fmri_spec.fact = struct('name', {}, 'levels', {});
    matlabbatch{1}.spm.stats.fmri_spec.bases.hrf.derivs = [0 0];
    matlabbatch{1}.spm.stats.fmri_spec.volt = 1;
    matlabbatch{1}.spm.stats.fmri_spec.global = 'Scaling';
    mask=[sub_inputdirA,filesep,sublist{i},'_space-MNI152NLin2009cAsym_label-GM_probseg.nii.gz'];
    mask_nii=[sub_inputdirA,filesep,sublist{i},'_space-MNI152NLin2009cAsym_label-GM_probseg.nii'];
    
    if ~exist(mask_nii,'file'), gunzip(mask)
    end
    mask_nii=[mask_nii, ',1']
    matlabbatch{1}.spm.stats.fmri_spec.mask = {mask_nii};
    matlabbatch{1}.spm.stats.fmri_spec.mthresh = 0.8;
    matlabbatch{1}.spm.stats.fmri_spec.cvi = 'none';
    
    %% Model estimation (Default)subdir
    matlabbatch{2}.spm.stats.fmri_est.spmmat = {[subdir filesep 'SPM.mat']};
    matlabbatch{2}.spm.stats.fmri_est.write_residuals = 0;
    matlabbatch{2}.spm.stats.fmri_est.method.Classical = 1;
    
    %% Contrasts
    matlabbatch{3}.spm.stats.con.spmmat = {[subdir filesep 'SPM.mat']};
    % Set contrasts of interest.
    matlabbatch{3}.spm.stats.con.consess{1}.tcon.name = 'mental_pain';
    matlabbatch{3}.spm.stats.con.consess{1}.tcon.convec = [1 -1 0 0 0 0 0 0 0 0 0 0 0 0 0];
    matlabbatch{3}.spm.stats.con.consess{2}.tcon.name = 'pain_mental';
    matlabbatch{3}.spm.stats.con.consess{2}.tcon.convec = [-1 1 0 0 0 0 0 0 0 0 0 0 0 0 0];
    matlabbatch{3}.spm.stats.con.delete = 0;
    
    %% Run matlabbatch jobs
    spm_jobman('run',matlabbatch);
    
end

4.2 First-level analysis

Run the followin commands in the terminal.

Dataset_1:

cd "/Volumes/Project0255/code/"
matlab -batch "BIDS_SPM_firstlevel_tom_dataset1"
matlab -batch "BIDS_SPM_firstlevel_tom_dataset1_ppn101"
matlab -batch "BIDS_SPM_firstlevel_tom_dataset1_ppn114"

Dataset_2:

cd "/Volumes/Project0255/code/"
matlab -batch "BIDS_SPM_firstlevel_tom_dataset2_ppn201_202"

Dataset_3:

cd "/Volumes/Project0255/code/"
matlab -batch "BIDS_SPM_firstlevel_tom_dataset3"

Dataset_4:

cd "/Volumes/Project0255/code/"
matlab -batch "BIDS_SPM_firstlevel_tom_dataset4"

4.3 Create group mask

Create a group average for the GM_probseg.nii for each dataset in Matlab (change the code per dataset; run this in MATLAB):

clear all

spm('Defaults','fMRI');
spm_jobman('initcfg');  

BIDS = spm_BIDS('/Volumes/Project0255/dataset_3'); %change this
BIDSfirst=fullfile(BIDS.dir,'derivatives/fmriprep'); 

sublist = transpose(BIDS.participants.participant_id) 
subex = [] %subjects that don't have an anatomical (14 dataset_1)
sublist(subex) = []; 

for i=1:length(sublist)
    subdir=fullfile(BIDSfirst,sublist{i}, 'anat')
    matlabbatch{1}.spm.util.imcalc.input{i,1} = [subdir, filesep, sublist{i}, '_space-MNI152NLin2009cAsym_label-GM_probseg.nii,1']
end
matlabbatch{1}.spm.util.imcalc.output = 'dataset3_averageGM';
matlabbatch{1}.spm.util.imcalc.outdir = {'/Volumes/Project0255/dataset_3/derivatives/fmriprep'}; %change this
matlabbatch{1}.spm.util.imcalc.expression = 'mean(X)';
matlabbatch{1}.spm.util.imcalc.var = struct('name', {}, 'value', {});
matlabbatch{1}.spm.util.imcalc.options.dmtx = 1;
matlabbatch{1}.spm.util.imcalc.options.mask = 0;
matlabbatch{1}.spm.util.imcalc.options.interp = 1;
matlabbatch{1}.spm.util.imcalc.options.dtype = 4;

spm_jobman('run',matlabbatch);

4.4 Example script for second-level whole-brain analysis

Example MATLAB script (dataset 3):

%========================================================================
%     SPM second-level analysis for fmriprep data in BIDS format
%========================================================================
%     This script is written by Ruud Hortensius and Michaela Kent 
%     (University of Glasgow) 
%
%     Last updated: January 2020
%========================================================================


clear all

%% Inputdirs
BIDS = spm_BIDS('/Volumes/Project0255/dataset_3'); % Parse BIDS directory (easier to query info from dataset)
BIDSfirst=fullfile(BIDS.dir,'derivatives/bids_spm/first_level'); % get the first-level directory

sublist = transpose(BIDS.participants.participant_id) %get subject list including the 'sub'
subex = [] %subjects that don't have a second-session
sublist(subex) = []; %update the subjects

%nsession = spm_BIDS(BIDS,'sessions') %how many sessions? careful, sometimes collapsing across sessions not wanted
%sessionid = 'ses-01' %get session id

taskid='movieHC'; %specify the task to be analysed

contrast='con_0001'; %specify the contrast to be analysed
contrast_name='mental_hc'; %specify the name of the contrast

smoothing = 1; %soomthing of first-level contrasts (1=yes, 0=no)
s_kernel = [5 5 5]

%% Outputdirs
outputdir=fullfile(BIDS.dir,'derivatives/bids_spm/second_level', char(contrast_name));  % root outputdir for sublist
spm_mkdir(outputdir); % create output directory 

spm('Defaults','fMRI'); %Initialise SPM fmri
spm_jobman('initcfg');  %Initialise SPM batch mode


%% Smoothing of first-level contrasts
if smoothing == 1
    for i=1:length(sublist)
        subdir=fullfile(BIDSfirst,sublist{i}, taskid);
        matlabbatch{1}.spm.spatial.smooth.data{i,1} = [subdir, filesep, contrast, '.nii,1'];
        matlabbatch{1}.spm.spatial.smooth.fwhm = s_kernel;
        matlabbatch{1}.spm.spatial.smooth.dtype = 0;
        matlabbatch{1}.spm.spatial.smooth.im = 0;
        matlabbatch{1}.spm.spatial.smooth.prefix = 's';
    end
    spm_jobman('run',matlabbatch);
    
    clear matlabbatch
end


%% Load the contrasts
matlabbatch{1}.spm.stats.factorial_design.dir = {outputdir};

for i=1:length(sublist)
    subdir=fullfile(BIDSfirst,sublist{i}, taskid);
    if smoothing == 1
        matlabbatch{1,1}.spm.stats.factorial_design.des.t1.scans{i,1} = [subdir, filesep, 's', contrast, '.nii,1']
    else
        matlabbatch{1,1}.spm.stats.factorial_design.des.t1.scans{i,1} = [subdir, filesep, contrast, '.nii,1']
    end
end

matlabbatch{1}.spm.stats.factorial_design.cov = struct('c', {}, 'cname', {}, 'iCFI', {}, 'iCC', {});
matlabbatch{1}.spm.stats.factorial_design.multi_cov = struct('files', {}, 'iCFI', {}, 'iCC', {});
matlabbatch{1}.spm.stats.factorial_design.masking.tm.tm_none = 1;
matlabbatch{1}.spm.stats.factorial_design.masking.im = 1;
matlabbatch{1}.spm.stats.factorial_design.masking.em = {''};
matlabbatch{1}.spm.stats.factorial_design.globalc.g_omit = 1;
matlabbatch{1}.spm.stats.factorial_design.globalm.gmsca.gmsca_no = 1;
matlabbatch{1}.spm.stats.factorial_design.globalm.glonorm = 1;

%% Model estimation 
matlabbatch{2}.spm.stats.fmri_est.spmmat = {[outputdir filesep 'SPM.mat']};
matlabbatch{2}.spm.stats.fmri_est.write_residuals = 0;
matlabbatch{2}.spm.stats.fmri_est.method.Classical = 1;

%% Contrast
%--------------------------------------------------------------------------
matlabbatch{3}.spm.stats.con.spmmat = {[outputdir filesep 'SPM.mat']};
matlabbatch{3}.spm.stats.con.consess{1}.tcon.name = contrast_name;
matlabbatch{3}.spm.stats.con.consess{1}.tcon.weights = 1;
matlabbatch{3}.spm.stats.con.consess{1}.tcon.sessrep = 'none';
matlabbatch{3}.spm.stats.con.delete = 0;

%% Results
%--------------------------------------------------------------------------
matlabbatch{4}.spm.stats.results.spmmat = {[outputdir filesep 'SPM.mat']};
matlabbatch{4}.spm.stats.results.conspec.titlestr = '';
matlabbatch{4}.spm.stats.results.conspec.contrasts = 1;
matlabbatch{4}.spm.stats.results.conspec.threshdesc = 'none';
matlabbatch{4}.spm.stats.results.conspec.thresh = 0.001;
matlabbatch{4}.spm.stats.results.conspec.extent = 5;
matlabbatch{4}.spm.stats.results.conspec.conjunction = 1;
matlabbatch{4}.spm.stats.results.conspec.mask.image.name = {'/Volumes/Project0255/dataset_3/derivatives/fmriprep/dataset3_averageGM.nii,1'};
matlabbatch{4}.spm.stats.results.conspec.mask.image.mtype = 0;
matlabbatch{4}.spm.stats.results.units = 1;
matlabbatch{4}.spm.stats.results.export{1}.pdf = true;
matlabbatch{4}.spm.stats.results.export{2}.jpg = true;
matlabbatch{4}.spm.stats.results.export{3}.csv = true;
matlabbatch{4}.spm.stats.results.export{4}.tspm.basename = contrast_name;

%% Run matlabbatch jobs
spm_jobman('run',matlabbatch);

4.5 Second-level whole-brain analysis

Run it seperately for the datasets:

cd "/Volumes/Project0255/code/"
matlab -batch "BIDS_SPM_secondlevel_tom_dataset1"
matlab -batch "BIDS_SPM_secondlevel_tom_dataset2"
matlab -batch "BIDS_SPM_secondlevel_tom_dataset3"
matlab -batch "BIDS_SPM_secondlevel_tom_dataset4"

4.6 ToM fROI analysis

Run the following (ROI_extract.m) script in matlab (change the code per dataset and roi and contrast - run this in MATLAB):

%========================================================================
%     fROI analysis for fmriprep data in BIDS format
%========================================================================
%     This script is written by  Michaela Kent and Ruud Hortensius
%     (University of Glasgow) 
%
%     Last updated: January 2020
%========================================================================
clear all
%add marsbar to path
marsbar('on')

%% Inputdirs
BIDS = spm_BIDS('/Volumes/Project0255/dataset_4'); % parse BIDS directory (easier to query info from dataset)
BIDSsecond=fullfile(BIDS.dir,'derivatives/bids_spm/second_level'); % get the second-level directory

contrastid = 'mental' %can be either mental (vs. pain) or pain (vs. mental)
networkid = 'tom' %can be either tom (theory-of-mind) or pain (pain matrix)

%% Outputdirs
outputdir=fullfile(BIDS.dir,'derivatives/roi', networkid);  % root outputdir for sublist
spm_mkdir(outputdir); % create output directory 

%% Load design matrix
spm_name = spm_load(fullfile(BIDSsecond, filesep, contrastid , 'SPM.mat'))
D  = mardo(spm_name);


%% Load rois
parcels = dir(fullfile(BIDS.dir,'derivatives/parcels/', networkid))
parcels = struct2cell(parcels(arrayfun(@(x) ~strcmp(x.name(1),'.'),parcels)))
parcels(2:6,:) = []

for i=1:length(parcels) 
    roi = fullfile(BIDS.dir,'derivatives/parcels/',  networkid, parcels{i})
    R  = maroi(roi);
    % Fetch data into marsbar data object
    mY  = get_marsy(R, D, 'mean');
    roi_data = summary_data(mY); % get summary time course(s)
    roi_name = [outputdir,filesep,parcels{i},'.tsv'];
    dlmwrite(roi_name,roi_data);
end

4.7 Custom steps

Add sub-201 and sub-202 to get the fROI data (different parameters, not included in the whole-brain analysis):

cd "/Volumes/Project0255/code/"
matlab -batch "BIDS_SPM_secondlevel_tom_dataset2_201_202"
matlab -batch "ROI_extract_201_202"

5. IDAQ

5.1 Calculation of individual scores:

Dataset 2: sub-206-212, 219, 221-22, 224-25, 228, 231, 233-34 completed a version with the scale ranging from 1-10 instead of 0-10. Analyses should be run with and without these participants:

sub_ex = c(206:212, 219, 221:222, 224:225, 228, 231, 233:234)

Get the IDAQ data for all the participants:

library(tidyverse)
Registered S3 method overwritten by 'dplyr':
  method           from
  print.rowwise_df     
Registered S3 methods overwritten by 'dbplyr':
  method         from
  print.tbl_lazy     
  print.tbl_sql      
── Attaching packages ─────────────────────────────────────────────────────────────────────────────────── tidyverse 1.3.0 ──
✓ ggplot2 3.3.0     ✓ purrr   0.3.4
✓ tibble  3.0.1     ✓ dplyr   0.8.5
✓ tidyr   1.0.2     ✓ stringr 1.4.0
✓ readr   1.3.1     ✓ forcats 0.5.0
── Conflicts ────────────────────────────────────────────────────────────────────────────────────── tidyverse_conflicts() ──
x dplyr::filter() masks stats::filter()
x dplyr::lag()    masks stats::lag()
#load data (/Volumes/Project0255/dataset_1/sourcedata/)
DF.d1  <- read_csv(file = paste("IDAQ_dataset1.csv", sep ="")) %>%
  gather("sub", "value", 4:32)
Parsed with column specification:
cols(
  .default = col_double(),
  scale = col_character(),
  subscale = col_character()
)
See spec(...) for full column specifications.
DF.d2  <- read_csv(file = paste("IDAQ_dataset2.csv", sep ="")) %>%
  gather("sub", "value", 4:38) 
Parsed with column specification:
cols(
  .default = col_double(),
  scale = col_character(),
  subscale = col_character()
)
See spec(...) for full column specifications.
DF.d3  <- read_csv(file = paste("IDAQ_dataset3.csv", sep ="")) %>%
  gather("sub", "value", 4:25) 
Parsed with column specification:
cols(
  .default = col_double(),
  scale = col_character(),
  subscale = col_character()
)
See spec(...) for full column specifications.
DF.d4  <- read_csv(file = paste("IDAQ_dataset4.csv", sep ="")) %>%
  gather("sub", "value", 4:25) 
Parsed with column specification:
cols(
  .default = col_double(),
  scale = col_character(),
  subscale = col_character()
)
See spec(...) for full column specifications.
DF.idaq <- bind_rows(DF.d1, DF.d2, DF.d3, DF.d4, .id = "dataset") %>%
  mutate(sub=gsub('sub-','',sub))%>%
  transform(sub=as.integer(sub)) %>%
  mutate(scale = as.factor(ifelse(scale == "IDAQ-NA", "IDAQNA", "IDAQ")))
rm(DF.d1, DF.d2, DF.d3, DF.d4)

5.2 Reliability of IDAQ

Check the reliability of the IDAQ scale:

library("psych")

Attaching package: ‘psych’

The following objects are masked from ‘package:ggplot2’:

    %+%, alpha
DF.idaq %>% 
  filter(scale == "IDAQ") %>%
  #filter(!sub %in% sub_ex) %>% 
  select(-scale, -subscale)  %>%
  spread(itemnr, value) %>%
  select(-sub, -dataset) %>%
  alpha(na.rm = TRUE)

Reliability analysis   
Call: alpha(x = ., na.rm = TRUE)

 

 lower alpha upper     95% confidence boundaries
0.75 0.8 0.86 

 Reliability if an item is dropped:

 Item statistics 

5.3 Reliability of IDAQ-NA

Check the reliability of the IDAQ-NA scale:

DF.idaq %>% 
  filter(scale == "IDAQNA") %>%
  filter(!sub %in%  sub_ex) %>% 
  select(-scale, -subscale)  %>%
  spread(itemnr, value) %>%
  select(-sub, -dataset) %>%
  alpha(na.rm = TRUE)

Reliability analysis   
Call: alpha(x = ., na.rm = TRUE)

 

 lower alpha upper     95% confidence boundaries
0.51 0.62 0.73 

 Reliability if an item is dropped:

 Item statistics 

5.4 Differences between datasets

Test if there are differences in IDAQ and IDAQ-NA scores between datasets.

Before fitting any model we establish which link function we need to use. This code is taken from Kevin Stadler’s github. In short, it uses the ordinal package to (quickly) find the link function that fits the data:

library(ordinal)

Attaching package: ‘ordinal’

The following object is masked from ‘package:dplyr’:

    slice
cumulativemodelfit <- function(formula, data, links=c("logit", "probit", "cloglog", "cauchit"),
    thresholds=c("flexible", "equidistant"), verbose=TRUE) {
  names(links) <- links
  names(thresholds) <- thresholds
  llks <- outer(links, thresholds,
    Vectorize(function(link, threshold)
      # catch error for responses with 2 levels
      tryCatch(ordinal::clm(formula, data=data, link=link, threshold=threshold)$logLik,
        error = function(e) NA)))
  print(llks)
  if (verbose) {
    bestfit <- which.max(llks)
    cat("\nThe best link function is ", links[bestfit %% length(links)], " with a ",
    thresholds[1 + bestfit %/% length(thresholds)], " threshold (logLik ", llks[bestfit],
    ")\n", sep="")
  }
  invisible(llks)
}

For the anthropomorphism subscale first:

DF.test = DF.idaq %>% 
  filter(scale == "IDAQ") %>% 
  mutate_all(as.factor) %>%
  mutate(value = factor(value, levels=c(0:10), ordered=TRUE)) #add contrast coding?

Get the link function:

cumulativemodelfit(value ~ 1, data=DF.test)
         flexible equidistant
logit   -3559.563   -3638.793
probit  -3559.563   -3629.921
cloglog -3559.563   -3663.966
cauchit -3559.563   -3629.921

The best link function is logit with a flexible threshold (logLik -3559.563)
  1. First cumulative ordinal model with dataset as fixed factor:
library(brms)
Loading required package: Rcpp
Registered S3 methods overwritten by 'htmltools':
  method               from         
  print.html           tools:rstudio
  print.shiny.tag      tools:rstudio
  print.shiny.tag.list tools:rstudio
Registered S3 method overwritten by 'htmlwidgets':
  method           from         
  print.htmlwidget tools:rstudio
Loading 'brms' package (version 2.12.0). Useful instructions
can be found by typing help('brms'). A more detailed introduction
to the package is available through vignette('brms_overview').

Attaching package: ‘brms’

The following objects are masked from ‘package:ordinal’:

    ranef, VarCorr

The following object is masked from ‘package:psych’:

    cs

The following object is masked from ‘package:stats’:

    ar
options(mc.cores = parallel::detectCores()) #run once (run on multiple cores)
ord.1 <- brm(
  value ~ 1 + dataset,  
  data  = DF.test,  
  family  = cumulative("logit"),
  file = 'ord.1~simple.RDS'
) 

Get summary and marginal effects:

summary(ord.1) #prob = .99  for 99 credible intervals
conditional_effects(ord.1, "dataset", categorical = TRUE)
plot(ord.1)
  1. Second cumulative ordinal model with dataset as fixed factor and random intercepts for participant and itemnr:
ord.2 <- brm(
  value ~ 1 + dataset +
    (1|sub) + (1|itemnr),   
  data  = DF.test,  
  family  = cumulative("logit"),
  file = 'ord.2~random.RDS'
) 

Get summary and marginal effects:

summary(ord.2) #prob = .99  for 99 credible intervals
conditional_effects(ord.2, "dataset", categorical = TRUE)
  1. Category-specific model:
ord.3 <- brm(
  value ~ 1 + cs(dataset) +
    (cs(1)|sub) + (cs(1)|itemnr),
  data  = DF.test,  
  family = acat("logit"),
  file = 'ord.3~category.RDS'
)  

Get summary and marginal effects:

summary(ord.3) #prob = .99  for 99 credible intervals
conditional_effects(ord.3, "dataset", categorical = TRUE)
  1. Adjecent-category model without category-specific effects (to check if differences between model 2 and 3 are not due to different classes of ordinal models):
ord.4 <- brm(
  value ~ 1 + dataset +
    (1|sub) + (1|itemnr),
  data  = DF.test,  
  family = acat("logit"),
  file = 'ord.4~category2.RDS'
) 

Get summary and marginal effects: #should add 1|itemnr and 1|sub

summary(ord.4) #prob = .99  for 99 credible intervals
conditional_effects(ord.4, "dataset", categorical = TRUE)
  1. Unequal variances model:
ord.5 <- brm(
  formula = bf(value ~ 1 + dataset) +
    lf(disc ~ 0 + dataset, cmc = FALSE),
  data = DF.test,
  family  = cumulative("logit"),
  file = 'ord.5~control.RDS'
) 

Get summary and marginal effects:

summary(ord.5) #prob = .99  for 99 credible intervals
conditional_effects(ord.5, "dataset", categorical = TRUE)
  1. Model comparison:
modelC1
Output of model 'ord.1':

Computed from 4000 by 1616 log-likelihood matrix
------
Monte Carlo SE of elpd_loo is 0.0.

All Pareto k estimates are good (k < 0.5).
See help('pareto-k-diagnostic') for details.

Output of model 'ord.2':

Computed from 4000 by 1616 log-likelihood matrix
------
Monte Carlo SE of elpd_loo is 0.1.

All Pareto k estimates are good (k < 0.5).
See help('pareto-k-diagnostic') for details.

Output of model 'ord.3':

Computed from 4000 by 1616 log-likelihood matrix
------
Monte Carlo SE of elpd_loo is 0.2.

Pareto k diagnostic values:
                         Count Pct.    Min. n_eff
(-Inf, 0.5]   (good)     1614  99.9%   728       
 (0.5, 0.7]   (ok)          2   0.1%   1193      
   (0.7, 1]   (bad)         0   0.0%   <NA>      
   (1, Inf)   (very bad)    0   0.0%   <NA>      

All Pareto k estimates are ok (k < 0.7).
See help('pareto-k-diagnostic') for details.

Output of model 'ord.4':

Computed from 4000 by 1616 log-likelihood matrix
------
Monte Carlo SE of elpd_loo is 0.2.

Pareto k diagnostic values:
                         Count Pct.    Min. n_eff
(-Inf, 0.5]   (good)     1615  99.9%   405       
 (0.5, 0.7]   (ok)          1   0.1%   2379      
   (0.7, 1]   (bad)         0   0.0%   <NA>      
   (1, Inf)   (very bad)    0   0.0%   <NA>      

All Pareto k estimates are ok (k < 0.7).
See help('pareto-k-diagnostic') for details.

Output of model 'ord.5':

Computed from 4000 by 1616 log-likelihood matrix
------
Monte Carlo SE of elpd_loo is 0.1.

All Pareto k estimates are good (k < 0.5).
See help('pareto-k-diagnostic') for details.

Model comparisons:
      elpd_diff se_diff
ord.2    0.0       0.0 
ord.3   -1.5      16.5 
ord.4  -46.0      10.6 
ord.5 -631.9      28.5 
ord.1 -648.4      27.2 
  1. Rerun winning model excluding the participants that completed the incorrect IDAQ version:
DF.test = DF.test %>% 
  filter(!sub %in% sub_ex) 
cumulativemodelfit(value ~ 1, data=DF.test)
         flexible equidistant
logit   -2975.673   -3023.229
probit  -2975.673   -3014.616
cloglog -2975.673   -3023.926
cauchit -2975.673   -3014.616

The best link function is probit with a equidistant threshold (logLik -2975.673)
  1. Model 2 while excluding these participants:
ord.2E <- brm(
  value ~ 1 + dataset +
    (1|sub) + (1|itemnr),   
  data  = DF.test,  
  family = cumulative(link = "probit", threshold="equidistant"),
  file = 'ord.2E~random.RDS'
) 

Get summary and marginal effects:

summary(ord.2E) #prob = .99  for 99 credible intervals
 Family: cumulative 
  Links: mu = probit; disc = identity 
Formula: value ~ 1 + dataset + (1 | sub) + (1 | itemnr) 
   Data: DF.test (Number of observations: 1379) 
Samples: 4 chains, each with iter = 2000; warmup = 1000; thin = 1;
         total post-warmup samples = 4000

Group-Level Effects: 
~itemnr (Number of levels: 15) 
              Estimate Est.Error l-95% CI u-95% CI Rhat Bulk_ESS Tail_ESS
sd(Intercept)     1.25      0.27     0.84     1.91 1.00     1123     1420

~sub (Number of levels: 92) 
              Estimate Est.Error l-95% CI u-95% CI Rhat Bulk_ESS Tail_ESS
sd(Intercept)     0.57      0.06     0.47     0.69 1.00     1424     2607

Population-Level Effects: 
              Estimate Est.Error l-95% CI u-95% CI Rhat Bulk_ESS Tail_ESS
Intercept[1]     -0.77      0.34    -1.45    -0.09 1.00      800     1348
Intercept[2]     -0.42      0.34    -1.10     0.26 1.00      797     1353
Intercept[3]     -0.06      0.34    -0.74     0.62 1.00      795     1329
Intercept[4]      0.29      0.34    -0.39     0.98 1.00      795     1324
Intercept[5]      0.64      0.34    -0.03     1.33 1.00      795     1316
Intercept[6]      1.00      0.34     0.32     1.69 1.00      798     1339
Intercept[7]      1.35      0.34     0.67     2.04 1.00      801     1349
Intercept[8]      1.70      0.34     1.02     2.39 1.00      806     1339
Intercept[9]      2.05      0.34     1.37     2.74 1.00      811     1333
Intercept[10]     2.41      0.35     1.72     3.10 1.00      818     1413
dataset2          0.30      0.19    -0.07     0.68 1.00     1691     2306
dataset3         -0.23      0.18    -0.60     0.13 1.00     1734     2677
dataset4         -0.07      0.18    -0.43     0.28 1.00     1890     2633

Family Specific Parameters: 
      Estimate Est.Error l-95% CI u-95% CI Rhat Bulk_ESS Tail_ESS
delta     0.35      0.01     0.33     0.37 1.00     7989     3010

Samples were drawn using sampling(NUTS). For each parameter, Bulk_ESS
and Tail_ESS are effective sample size measures, and Rhat is the potential
scale reduction factor on split chains (at convergence, Rhat = 1).
conditional_effects(ord.2E, "dataset", categorical = TRUE)

5.5 IDAQ per subject

Calculate the IDAQ per subject:

DF.idaq <- DF.idaq %>%
  group_by(sub,dataset, scale, subscale) %>%
  summarise(score = sum(value, na.rm = TRUE)) %>%
  ungroup()%>%
  mutate_at(vars(-score),as.factor)

5.6 Visualise the scores

Visualise the scores across the datasets and scales:

source("R_rainclouds.R") #/Volumes/Project0255/code
p <- DF.idaq %>%
  group_by(sub,dataset, scale) %>%
  summarise(score = sum(score)) %>%
  ggplot(.,aes(x=dataset,y=score,fill=dataset, group = dataset))+
  geom_flat_violin(position=position_nudge(x = .2, y = 0),adjust =2, trim = FALSE, alpha = .75, colour = "Black") +
  geom_point(aes(colour = dataset), position=position_jitter(width = .05), size = .5, shape = 21, colour = "Black") +
  geom_boxplot(aes(x=dataset,y=score),position=position_nudge(x = .1, y = 0),outlier.shape = NA, alpha = .5, width = .1, colour = "black") + 
  scale_fill_brewer(palette = "Blues") +
  scale_colour_brewer(palette = "Blues") +
  theme_classic() + 
  ylab(paste("score (0-150)")) + 
  ggtitle(paste("Comparison of IDAQ scores between datasets")) +
  theme(legend.position="none") +
  facet_wrap(~scale)
p

5.7 Median and interquartile range per dataset

Calculate the median IQR per dataset (table S2):

DF.idaq %>%
  #filter(!sub %in%  sub_ex) %>% 
  group_by(sub,dataset, scale) %>%
  summarise(score = sum(score)) %>%
  group_by(dataset, scale) %>%
  summarise(median = median(score),
            iqr = IQR(score))

6. fROI results

6.1 Data wrangling

Create function to load the data for the different networks:

library(fs)
roi_extract <- function(datasetno, substart, subend, network, nroi) {
  
  dir_ls(paste("dataset_", datasetno, "/derivatives/roi/", network, sep = ""), regexp = "\\.tsv$") %>% 
    map_dfr(read.delim, sep = "\t", .id = "id", header = FALSE)  %>%
    mutate(dataset = datasetno) %>%
    mutate(network = network) %>%
    mutate(network = str_extract(network, "tom|pain")) %>%
    mutate(id = str_extract(id, "dmpfc|mmpfc|vmpfc|ltpj|rtpj|prec|amcc|lmfg|rmfg|ls2|rs2|linsula|rinsula")) %>%
    rename(roi = id, contrast = V1) %>%
    mutate(sub = rep(substart:subend, times=nroi, each=1)) %>%
    select(5,3,4,1:2)
} 

Load the data for the Theory-of-Mind network:

DF.d1 <- roi_extract(1, 101, 129, "tom", 6)
DF.d2.a <- roi_extract(2, 201, 202, "tom/201_202", 6)
DF.d2.b <- roi_extract(2, 203, 235, "tom", 6)
DF.d3 <- roi_extract(3, 301, 322, "tom", 6)
DF.d4 <- roi_extract(4, 401, 422, "tom", 6)
DF.temp <- bind_rows(DF.d1, DF.d2.a, DF.d2.b, DF.d3, DF.d4) 

Load the data for the Pain Matrix:

DF.d1 <- roi_extract(1, 101, 129, "pain", 7)
DF.d2.a <- roi_extract(2, 201, 202, "pain/201_202/", 7)
DF.d2.b <- roi_extract(2, 203, 235, "pain", 7)
DF.d3 <- roi_extract(3, 301, 322, "pain", 7)
DF.d4 <- roi_extract(4, 401, 422, "pain", 7)
DF.roi <- bind_rows(DF.temp, DF.d1, DF.d2.a, DF.d2.b, DF.d3, DF.d4)
rm(DF.d1, DF.d2.a, DF.d2.b, DF.d3, DF.d4, DF.temp, DF.test)

Reorder ROI names for plots:

order <- c("rtpj", "ltpj", "prec", "vmpfc","mmpfc","dmpfc", "rs2", "ls2", "rinsula", "linsula", "rmfg", "lmfg", "amcc")  
DF.roi <- DF.roi %>%
  mutate_at(vars(-contrast),as.factor) %>%
  group_by(sub, dataset) %>%
  mutate(roi = fct_relevel(roi, order))

6.2 Theory-of-Mind network activation across datasets:

Plot the ToM activity across regions and datasets:

p1 <- DF.roi %>%
  filter(network == "tom") %>%
  ggplot(.,aes(x=roi,y=contrast,fill=roi))+
  geom_hline(yintercept = 0, color = "grey", linetype = 2) +
  geom_flat_violin(position=position_nudge(x = .2, y = 0),adjust =2, trim = FALSE, colour = "Black") +
  geom_point(aes(colour = roi, fill = roi), position=position_jitter(width = .05), size = .5, shape = 21, colour = "Black") +
  geom_boxplot(aes(x=roi,y=contrast),position=position_nudge(x = .1, y = 0),outlier.shape = NA, alpha = .5, width = .1, colour = "black") + 
  theme_classic() + 
  ylab(paste("contrast estimates (mental > pain)")) + 
  scale_fill_brewer(palette = "Blues") +
  scale_colour_brewer(palette = "Blues") + 
  ggtitle(paste("ToM network contrasts estimates across datasets")) + 
  theme(legend.position="none") +
  facet_wrap(~dataset) 
p1

6.3 Differences in ToM activation between datasets:

Test if for potential differences between datasets and rois:

tom.compare <- brm(
  formula = contrast ~ roi * dataset,
  data = DF.roi %>% filter(network == "tom"),
  #family  = cumulative("logit"),
  file = 'tom.compare.RDS'
) 
summary(tom.compare)
 Family: gaussian 
  Links: mu = identity; sigma = identity 
Formula: contrast ~ roi * dataset 
   Data: DF.roi %>% filter(network == "tom") (Number of observations: 648) 
Samples: 4 chains, each with iter = 2000; warmup = 1000; thin = 1;
         total post-warmup samples = 4000

Population-Level Effects: 
                  Estimate Est.Error l-95% CI u-95% CI Rhat Bulk_ESS Tail_ESS
Intercept             0.60      0.08     0.45     0.75 1.00     1342     2591
roiltpj              -0.03      0.11    -0.24     0.18 1.00     1872     2830
roiprec               0.39      0.10     0.18     0.60 1.00     1896     2151
roivmpfc             -0.29      0.11    -0.50    -0.08 1.00     2070     2687
roimmpfc             -0.23      0.11    -0.44    -0.02 1.00     1699     2870
roidmpfc             -0.34      0.11    -0.56    -0.13 1.00     1910     2816
dataset2              0.18      0.10    -0.02     0.38 1.00     1633     2490
dataset3             -0.15      0.11    -0.37     0.08 1.00     1859     2690
dataset4             -0.03      0.12    -0.27     0.20 1.00     1818     2126
roiltpj:dataset2      0.09      0.15    -0.20     0.37 1.00     2030     2977
roiprec:dataset2     -0.08      0.14    -0.35     0.20 1.00     2164     2860
roivmpfc:dataset2    -0.03      0.14    -0.31     0.25 1.00     2321     2870
roimmpfc:dataset2    -0.09      0.14    -0.37     0.19 1.00     1506     3054
roidmpfc:dataset2    -0.10      0.14    -0.37     0.19 1.00     2002     2898
roiltpj:dataset3     -0.10      0.16    -0.41     0.22 1.00     2235     2712
roiprec:dataset3     -0.21      0.16    -0.53     0.10 1.00     2261     2701
roivmpfc:dataset3    -0.02      0.16    -0.33     0.29 1.00     2203     3083
roimmpfc:dataset3    -0.00      0.16    -0.32     0.30 1.00     2321     3007
roidmpfc:dataset3     0.11      0.16    -0.21     0.42 1.00     2378     2685
roiltpj:dataset4     -0.04      0.16    -0.36     0.28 1.00     2183     2531
roiprec:dataset4     -0.29      0.16    -0.61     0.03 1.00     2445     2650
roivmpfc:dataset4    -0.15      0.16    -0.46     0.17 1.00     2339     2596
roimmpfc:dataset4    -0.22      0.16    -0.53     0.11 1.00     2245     2733
roidmpfc:dataset4    -0.06      0.16    -0.39     0.26 1.00     2253     2756

Family Specific Parameters: 
      Estimate Est.Error l-95% CI u-95% CI Rhat Bulk_ESS Tail_ESS
sigma     0.40      0.01     0.38     0.42 1.00     4688     3061

Samples were drawn using sampling(NUTS). For each parameter, Bulk_ESS
and Tail_ESS are effective sample size measures, and Rhat is the potential
scale reduction factor on split chains (at convergence, Rhat = 1).
plot(tom.compare)

conditional_effects(tom.compare)

6.4 Pain Matrix activation across datasets

Plot the Pain Matrix activity across regions and datasets:

p2 <- DF.roi %>%
  filter(network == "pain") %>%
  ggplot(.,aes(x=roi,y=contrast,fill=roi))+
  geom_hline(yintercept = 0, color = "grey", linetype = 2) +
  geom_flat_violin(position=position_nudge(x = .2, y = 0),adjust =2, trim = FALSE, colour = "Black") +
  geom_point(aes(colour = roi, fill = roi), position=position_jitter(width = .05), size = .5, shape = 21, colour = "Black") +
  geom_boxplot(aes(x=roi,y=contrast),position=position_nudge(x = .1, y = 0),outlier.shape = NA, alpha = .5, width = .1, colour = "black") + 
  theme_classic() + 
  ylab(paste("contrast estimates (pain > mental)")) + 
  scale_fill_brewer(palette = "Reds") +
  scale_colour_brewer(palette = "Reds") + 
  ggtitle(paste("Pain matrix contrasts estimates across datasets")) + theme(legend.position="none") +
  facet_wrap(~dataset)
p2

6.5 Differences in Pain Matrix activation between datasets:

Test if for potential differences between datasets and rois:

6.6 Combine IDAQ scores and ROI data:

Create one DF:

DF.roi <- DF.idaq %>% 
  group_by(sub,dataset, scale) %>%
  summarise(score = sum(score)) %>%
  ungroup() %>% 
  left_join(DF.roi, DF.idaq, by = c("sub","dataset"), keep = FALSE) %>%
  spread(key=scale, value=score) #change this (pivot_wider)

Center the variables for the formal analysis:

DF.roi$cent_IDAQNA <- scale(DF.roi$IDAQNA, scale = TRUE)
DF.roi$cent_IDAQ <- scale(DF.roi$IDAQ, scale = TRUE)
DF.roi <- DF.roi %>% group_by(roi) %>% mutate(cent_contrast = scale(contrast, scale =TRUE))

7. IDAQ scores and ToM activity

7.1 Plot ToM and IDAQ

Create scatterplots with linear and non-linear lines:

library(patchwork)
p1 <- DF.roi %>%
  filter(network == "tom") %>%
  ggplot(aes(x=cent_IDAQ, y=cent_contrast)) +
  geom_point(alpha=0.5,show.legend = FALSE) +
  geom_smooth(method="lm", formula=y ~ x, se=TRUE, show.legend = FALSE, colour="#0072B2") +
  geom_smooth(method="lm", formula=y ~ x+ I(x^2), se=TRUE, show.legend=FALSE, colour = "#D55E00") +
  #coord_fixed(ratio = 25/1) +
  labs(
    x="IDAQ score",
    y="contrast (mental vs pain)"
  ) + theme_classic()
p2 <- DF.roi %>%
  filter(network == "tom") %>%
  ggplot(aes(x=cent_IDAQ, y=cent_contrast)) +
  geom_point(alpha=0.5,show.legend = FALSE) +
  geom_smooth(method="lm", formula=y ~ x, se=TRUE, show.legend = FALSE, colour="#0072B2") +
  geom_smooth(method="lm", formula=y ~ x+ I(x^2), se=TRUE, show.legend=FALSE, colour = "#D55E00") +
  #coord_fixed(ratio = 25/1) +
  labs(
    x="IDAQ score",
    y="contrast (mental vs pain)"
  ) + theme_classic() +
  facet_wrap(~roi)
p1 & p2

7.2 Create a function for the Bayesian regression models:

For the formal analysis we will test a linear and quadratic relationship between IDAQ and ToM network activity:

DF.roi$cent_IDAQ2 <- DF.roi$cent_IDAQ^2

We run the models with uninformative (default) priors and create a function to run it for each region separately:

reg_model <- function(region){
  brm(formula = cent_contrast ~ cent_IDAQ + cent_IDAQ2,
      data = DF.roi %>% filter(roi == region),
      family = gaussian,
      chains = 4,
      iter = 4000,
      seed = 42, #so the model is reproducible
      file = paste0(region, ".RDS"))
}

7.3 ToM regression models:

Run the models for the ToM network first. It will load the model if it is already calculated:

dmpfc <- reg_model("dmpfc")
Compiling the C++ model
recompiling to avoid crashing R session
Start sampling
starting worker pid=34769 on localhost:11365 at 14:03:25.243
starting worker pid=34785 on localhost:11365 at 14:03:25.589
starting worker pid=34800 on localhost:11365 at 14:03:25.932
starting worker pid=34816 on localhost:11365 at 14:03:26.263

SAMPLING FOR MODEL 'ae80ff0a76e7e2f8111d12dbd9f32c65' NOW (CHAIN 1).
Chain 1: 
Chain 1: Gradient evaluation took 5.6e-05 seconds
Chain 1: 1000 transitions using 10 leapfrog steps per transition would take 0.56 seconds.
Chain 1: Adjust your expectations accordingly!
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SAMPLING FOR MODEL 'ae80ff0a76e7e2f8111d12dbd9f32c65' NOW (CHAIN 2).
Chain 2: 
Chain 2: Gradient evaluation took 4.5e-05 seconds
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SAMPLING FOR MODEL 'ae80ff0a76e7e2f8111d12dbd9f32c65' NOW (CHAIN 3).
Chain 3: 
Chain 3: Gradient evaluation took 3.6e-05 seconds
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SAMPLING FOR MODEL 'ae80ff0a76e7e2f8111d12dbd9f32c65' NOW (CHAIN 4).
Chain 4: 
Chain 4: Gradient evaluation took 4.4e-05 seconds
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Get the summaries (do some wrangling):

summary(rtpj)
summary(ltpj)
summary(prec)
summary(vmpfc)
summary(mmpfc)
summary(dmpfc)

Get the posterior summaries (do some wrangling):

posterior_summary(rtpj)
                  Estimate  Est.Error         Q2.5        Q97.5
b_Intercept     0.03249761 0.11881671   -0.2021113    0.2651675
b_cent_IDAQ    -0.04648798 0.10028257   -0.2405445    0.1529703
b_cent_IDAQ2   -0.03194813 0.06849911   -0.1667328    0.1041422
sigma           1.01988467 0.07039325    0.8959891    1.1712674
lp__         -160.39479719 1.43253599 -163.9281831 -158.6292153
posterior_summary(ltpj)
                 Estimate  Est.Error         Q2.5         Q97.5
b_Intercept     0.1244172 0.11700780   -0.1053005  3.501595e-01
b_cent_IDAQ     0.0596249 0.09841582   -0.1345777  2.496315e-01
b_cent_IDAQ2   -0.1248006 0.06691500   -0.2542993  6.372877e-03
sigma           1.0047078 0.06984166    0.8774334  1.150556e+00
lp__         -158.9083859 1.43186092 -162.4884884 -1.571363e+02
posterior_summary(prec)
                  Estimate  Est.Error         Q2.5        Q97.5
b_Intercept     0.02018315 0.11847588   -0.2144043    0.2522868
b_cent_IDAQ    -0.08992156 0.09934052   -0.2897915    0.1024180
b_cent_IDAQ2   -0.01959379 0.06857515   -0.1549524    0.1159378
sigma           1.01708141 0.06915914    0.8913231    1.1611653
lp__         -160.14174540 1.40971329 -163.6744887 -158.3646289
posterior_summary(vmpfc)
                  Estimate  Est.Error          Q2.5        Q97.5
b_Intercept     0.02119815 0.11933919   -0.21458997    0.2566284
b_cent_IDAQ     0.14653189 0.10010739   -0.05139901    0.3393247
b_cent_IDAQ2   -0.02169732 0.06852317   -0.15346757    0.1137631
sigma           1.00991270 0.06919926    0.88435665    1.1536814
lp__         -159.57967116 1.43121736 -163.28481068 -157.8000195
posterior_summary(mmpfc)
                  Estimate  Est.Error          Q2.5         Q97.5
b_Intercept     0.05349126 0.11489549   -0.17201120    0.27914652
b_cent_IDAQ     0.17767224 0.09820437   -0.01521113    0.36989799
b_cent_IDAQ2   -0.05248210 0.06724244   -0.18244435    0.07785158
sigma           1.00599835 0.06988701    0.87996520    1.15510092
lp__         -158.91120664 1.40556981 -162.55865625 -157.13960968
posterior_summary(dmpfc)
                  Estimate  Est.Error         Q2.5        Q97.5
b_Intercept   6.704258e-02 0.11954534   -0.1660280    0.3011386
b_cent_IDAQ   5.733765e-04 0.09951324   -0.1950847    0.1995904
b_cent_IDAQ2 -6.689590e-02 0.06823964   -0.1989136    0.0688451
sigma         1.017383e+00 0.07028719    0.8898194    1.1667391
lp__         -1.601897e+02 1.42970707 -163.7790483 -158.4032061

Create a function for the posterior plots:

  plot_title <- ggtitle( "Posterior distributions for", paste(deparse(substitute(model))),
                        "with medians and 80% intervals")
Error in ggtitle("Posterior distributions for", paste(deparse(substitute(model))),  : 
  unused argument ("with medians and 80% intervals")

Plot the posterior distributions

pp_rtpj <- posterior_plots(rtpj)
pp_ltpj <- posterior_plots(ltpj)
pp_prec <- posterior_plots(prec)
pp_vmpfc <- posterior_plots(vmpfc)
pp_mmpfc <- posterior_plots(mmpfc)
pp_dmpfc <- posterior_plots(dmpfc)

pp_rtpj + pp_ltpj + pp_prec + 
  pp_vmpfc + pp_mmpfc + pp_dmpfc

Create plots (make some edit):

library("bayesplot")
This is bayesplot version 1.7.1
- Online documentation and vignettes at mc-stan.org/bayesplot
- bayesplot theme set to bayesplot::theme_default()
   * Does _not_ affect other ggplot2 plots
   * See ?bayesplot_theme_set for details on theme setting

pp_check(rtpj, nsamples = 100) #maximal model


library(doBy)
library(brms)
library(easystats)
library(tidyverse)

rope_range(test) # determine the ROPE range

testR <- bayestestR::equivalence_test(test, range = c(-0.1, 0.1), ci = 0.95) # assert the null
testR <- testR[-c(3),]

plot(testR) + theme_abyss() + scale_fill_flat() # plot the decision on H0


describe_posterior(
  rtpj,
  effects = "all",
  component = "all",
  test = c("p_direction", "p_significance"),
  centrality = "all"
)


library(bayestestR)

posterior <- distribution_gamma(10000, 1.5)  # Generate a skewed distribution
centrality <- point_estimate(posterior)  # Get indices of centrality
centrality
plot(centrality)
plot(rtpj)

8. IDAQ scores and Pain Matrix activity

7.1 Plot ToM and IDAQ

Create scatterplots with linear and non-linear lines:

p1 <- DF.roi %>%
  filter(network == "pain") %>%
  ggplot(aes(x=cent_IDAQ, y=cent_contrast)) +
  geom_point(alpha=0.5,show.legend = FALSE) +
  geom_smooth(method="lm", formula=y ~ x, se=TRUE, show.legend = FALSE, colour="#0072B2") +
  geom_smooth(method="lm", formula=y ~ x+ I(x^2), se=TRUE, show.legend=FALSE, colour = "#D55E00") +
  #coord_fixed(ratio = 25/1) +
  labs(
    x="IDAQ score",
    y="contrast (pain vs mental)"
  ) + theme_classic()

p2 <- DF.roi %>%
  filter(network == "pain") %>%
  ggplot(aes(x=cent_IDAQ, y=cent_contrast)) +
  geom_point(alpha=0.5,show.legend = FALSE) +
  geom_smooth(method="lm", formula=y ~ x, se=TRUE, show.legend = FALSE, colour="#0072B2") +
  geom_smooth(method="lm", formula=y ~ x+ I(x^2), se=TRUE, show.legend=FALSE, colour = "#D55E00") +
  #coord_fixed(ratio = 25/1) +
  labs(
    x="IDAQ score",
    y="contrast (pain vs mental)"
  ) + theme_classic() +
  facet_wrap(~roi, nrow = 2)

p1 + p2

8.2 Regression models for the Pain Matrix:

Run the models for the Pain Matrix (control network). It will load the model if it is already calculated:

rs2 <- reg_model("rs2")
ls2 <- reg_model("ls2")
rinsula <- reg_model("rinsula")
linsula <- reg_model("linsula")
rmfg <- reg_model("rmfg")
lmfg <- reg_model("lmfg")
amcc <- reg_model("amcc")
summary(linsula)
posterior_summary(linsula)
plot(linsula)

9. Control analyses

use the update function!

sessionInfo()
  1. Across all ToM ROIs
  • Compare linear model vs. quadratic model; is there evidence for one, or for Null?
  • Fit the model, predict values, test sensitivity/fit
  1. For each ToM ROI
  • Compare linear model vs. quadratic model; is there evidence for one, or for Null?
  • Fit the model, predict values, test sensitivity/fit

(3. control across all ROIs - pain) (4. control for each pain ROI)

Add seed at the end!

what is sigma

options("scipen"=10, "digits"=5)

tidy(rtpj) %>% slice(1:3) %>% mutate_if(is.double, round, digits = 5)


DF.test <- DF.roi %>% 
  filter(roi == "rtpj")


reg.1 <- brm(formula = cent_contrast ~ cent_IDAQ + cent_IDAQ2,
             data = DF.test,
             family = gaussian)

plot(DF.test$cent_IDAQ2, DF.test$cent_IDAQ)


summary(reg.1)
plot(reg.1) 
posterior_summary(reg.1)
prior_summary(reg.1)
pairs(reg.1) #look into this
plot(conditional_effects(reg.1), points = TRUE)

roi <- "rtpj"

reg.2 <- brm(formula = cent_contrast ~ cent_IDAQ + cent_IDAQ2,
             data = DF.roi %>% filter(roi == roi),
             family = gaussian,
             chains = 4,
             iter = 4000,
             seed = 42,
             file = paste0(roi, ".RDS"))
summary(reg.2)
tidy(rtpj) %>% slice(1:3) %>% mutate_if(is.double, round, digits = 2)


library("shinystan")

launch_shinystan(reg.1)
reg.2 <- brm(formula = cent_contrast ~ (cent_IDAQ + I(cent_IDAQ^2)), 
             data = DF.test)  

  print(summary(fit_lin))
    me <- marginal_effects(fit_lin, "time") %>%
      plot(plot = FALSE) %>%
      getElement(1) + 
      ylim(range(dat_tmp$rating, na.rm = TRUE) + c(-0.5, 0.5))
    plot(me)
    
    # quadratic model
    fit_quad <- run_model(
      brm(
        rating ~ (time + I(time^2)) + 
          Age + Geschlecht + Erstbehandlung + diag + 
          ((time + I(time^2)) | PATNR) + (1 | item), 
        data = dat_tmp, family = fam, 
        cores = cores, chains = chains
      ),
      path = paste0("models/fit_hyp1_", meas, "_", fam, "_quad")
    )
    print(summary(fit_quad))
    me <- marginal_effects(fit_quad, "time") %>%
      plot(plot = FALSE) %>%
      getElement(1) + 
      ylim(range(dat_tmp$rating, na.rm = TRUE) + c(-0.5, 0.5))
    plot(me)
# install.packages("rstanarm") #do not selet the one that needs complilation 
library(rstan)
library(rstanarm)
library(ggplot2)
library(bayesplot)


# this option uses multiple cores if they're available
options(mc.cores = parallel::detectCores()) 

DF.test <- DF.roi %>%
  filter(roi == "rtpj")

glm_post1 <- stan_glm(cent_contrast~cent_IDAQ, data=DF.test, family=gaussian) #which family?
glm_post1 <- stan_glm(contrast~IDAQ + I(IDAQ^2), data=DF.test, family=gaussian) #does it need to be centered?

stan_trace(glm_post1, pars=c("(Intercept)","IDAQ","sigma"))
summary(glm_post1)
pp_check(glm_post1)

posterior_vs_prior(glm_post1, group_by_parameter = TRUE, pars=c("(Intercept)"))
posterior_vs_prior(glm_post1, group_by_parameter = TRUE, pars=c("cent_IDAQ","sigma"))


linear.model <-lm(DF.test$cent_contrast ~ DF.test$cent_IDAQ +I(DF.test$cent_IDAQ^2))
glm_fit <- glm(cent_contrast~cent_IDAQ +I(cent_IDAQ^2), data=DF.test, family=gaussian)
glm_fit <- glm(cent_contrast~cent_IDAQ, data=DF.test, family=gaussian)

summary(glm_fit)
summary(linear.model)

plot(DF.test$cent_contrast ~ DF.test$cent_IDAQ, pch=16, ylab = "Counts ", cex.lab = 1.3, col = "red")
abline(lm(DF.test$cent_contrast ~ DF.test$cent_IDAQ), col = "blue")


DF.test$cent_IDAQ2 <- DF.test$cent_IDAQ^2
quadratic.model <-lm(DF.test$cent_contrast ~ DF.test$cent_IDAQ + DF.test$cent_IDAQ2)
summary(quadratic.model)

idaqvalues <- seq(-40, 51, .1)
predictedcounts <- predict(quadratic.model,list(IDAQ=idaqvalues, IDAQ2=idaqvalues^2))
plot(DF.test$cent_contrast ~ DF.test$cent_IDAQ, pch=16, ylab = "Counts ", cex.lab = 1.3, col = "red")
lines(idaqvalues, predictedcounts, col = "darkgreen", lwd = 3)
# OLD code: get fitted values
newdata = data.frame(dataset = levels(as.factor(DF.test$dataset)), itemnr = as.factor(DF.test$itemnr))
fit = fitted(mod1, newdata = newdata, re_formula = NA)
colnames(fit) = c('fit', 'se', 'lwr', 'upr')
df_plot = cbind(newdata, fit)
df_plot

obs = aggregate(value ~ dataset, DF.test, mean) 

ggplot(df_plot, aes(x = dataset, y = fit)) +
  geom_violin(data=DF.test, aes(x=dataset, y=value), alpha=0.5, color="gray70", fill='gray95') +
  geom_jitter(data=obs, aes(x=dataset, y=value), alpha=0.3, position = position_jitter(width = 0.07)) +
  geom_errorbar(aes(ymin=lwr, ymax=upr), position=position_dodge(), size=1, width=.5) +
  geom_point(shape=21, size=4, fill='red') +
  xlab("") +
  theme_bw () +
  theme(panel.grid = element_blank())
---
output:
  html_notebook:
    number_sections: no
    theme: default
    toc: yes
    toc_float: yes
  html_document:
    df_print: paged
    toc: yes
editor_options: 
  chunk_output_type: inline
---
#**AnThroM**
**testing the relation between Theory-of-Mind network activation and dispositional anthropomorphism**  
by *Ruud Hortensius and Michaela Kent (University of Glasgow) - June 2019 - ...*

# 1. Details {.tabset}

## 1.1 Data 

Data of the Theory-of-Mind functional localiser and Individual Differences in Anthropomorphism Questionnaire are from five different studies.
  
 Dataset_1: Bangor Imaging Unit; EMBOTS; *n*=29 (including 1 pilot scan); full dataset and publication: [Cross...Hortensius (2019)   PTRB](https://royalsocietypublishing.org/doi/10.1098/rstb.2018.0034).  
 
 Dataset_2: Centre for Cognitive NeuroImaging; SHAREDBOTS; *n*=35 (including 2 pilot scans) publication: Hortensius & Cross, in preparation.  
 
 Dataset_3: Centre for Cognitive NeuroImaging; Two studies with the same parameters: *n*=22 (including 2 pilot scans). Social_Gradient_1; *n*=10 (pilot experiment) and BOLDlight; *n*=12.  
 
 Dataset_4: Centre for Cognitive NeuroImaging; GAMEBOTS; *n*=22.  

Get info for table S1:
```{r}
library("tidyverse")

#load own data
DF.dataset1 <- read_tsv(file = "/Volumes/Project0255/dataset_1/participants.tsv")
DF.dataset2 <- read_tsv(file = "/Volumes/Project0255/dataset_2/participants.tsv")
DF.dataset3 <- read_tsv(file = "/Volumes/Project0255/dataset_3/participants.tsv")
DF.dataset4 <- read_tsv(file = "/Volumes/Project0255/dataset_4/participants.tsv")

#combine data
bind_rows(DF.dataset1, DF.dataset2, DF.dataset3,  DF.dataset4, .id = "dataset") %>%
  group_by(dataset) %>% 
  summarise(mean = mean(age), 
            sd = sd(age))
bind_rows(DF.dataset1, DF.dataset2, DF.dataset3,  DF.dataset4, .id = "dataset") %>%
  group_by(dataset, sex) %>% 
  tally()
```


## 1.2 Neuroimaging procedure
 
 All participants completed a Theory-of-Mind localiser ([Jacoby et al., 2016](https://www.sciencedirect.com/science/article/pii/S1053811915010472); [Richardson et al. 2018](https://www.nature.com/articles/s41467-018-03399-2)) and an anatomical scan either in the same session or in two seperate sessions. During the localiser participants passively viewed a short 5.6 min animated film ([Partly Cloudy](https://www.pixar.com/partly-cloudy#partly-cloudy-1)). This movie includes scenes depicting pain (e.g. an alligator biting the main character) and events that trigger mentalizing (e.g. the main character revealing its intention). For dataset_3 and dataset_4 a fieldmap was collected as well. At the end of each experiment participants completed the Individual Differences in Anthropomorphism Questionnaire (IDAQ) ([Waytz et al., 2010](https://journals.sagepub.com/doi/full/10.1177/1745691610369336)). 
 
- BOLD:   
 Dataset_1: 3x3x3.5mm voxels, 32 slices, repetition time = 2s, echo time = 30ms  
 Dataset_2: 3mm isotropic, 37 slices, TR = 2s, TE = 30ms  
 Dataset_3: 2mm isotropic, 68 slices, TR = 2s, TE = 26ms  
 Dataset_4: 2.75 x 2.75 x 4mm, 32 slices, TR = 2s, TE = 13 and 31ms  
 
- T1W:   
 Dataset_1: 1mm isotropic resolution, TR = 12ms, TE = 3.47 / 5.15 / 6.83 / 8.52 / 10.20ms (SENSE)  
 Dataset_2 - 4: 1mm isotropic resolution, TR = 2.3s, TE = 29.6ms (ADNI)  
 
- Fieldmaps:   
 Dataset_1: no, so --use-syn-sdc  
 Dataset_2: no, so --use-syn-sdc  
 Dataset_3: yes  
 Dataset_4: yes  
 
## 1.3 To do
- remove Dicoms after BIDS dataset creation  
- run formal analyses (Bayesian)   

Note: for the code chunk the language is listed, but all except for r-chunks are executed in the terminal   

# 2. BIDS dataset {.tabset}

## 2.1 Creating the BIDS dataset
For this you need HeuDiConv [Heuristic DICOM Converter](https://github.com/nipy/heudiconv).  
Based on the tutorial by [Franklin Feingold](http://reproducibility.stanford.edu/bids-tutorial-series-part-2a/).

Dowload the latest version of Heudiconv (we used 0.6.0.dev1):
```{bash}
docker pull nipy/heudiconv:latest
```

If on the GRID do:
```{bash}
singularity pull docker://nipy/heudiconv:latest
```

Create the info file (dataset_2 - 4):
```{bash}
docker run --rm -it -v /Volumes/Project0255/:/base nipy/heudiconv:latest -d /base/dataset_3/sourcedata/sub-{subject}/*.IMA -o /base/dataset_3 -f convertall -s 315 -c none --overwrite
```

For dataset_1 we first need to convert the .dcm from jpeg-2000 lossless to uncompressed dcm (thanks to Michele Svanera for the code):
```{pyton}
python3 convert_all_compressed_dicom.py
```

Create the info file (dataset_1):
```{bash}
docker run --rm -it -v /Volumes/Project0255/:/base nipy/heudiconv:latest -d /base/dataset_1/sourcedata/sub-{subject}/ses-{session}/*.dcm -o /base/dataset_1 -f convertall -s 129 -ss 01 -c none --overwrite
```

Get the info file:
```{bash}
cp /Volumes/Project0255/code/.heudiconv/301/info/dicominfo.tsv /Volumes/Project0255/code
```

## 2.2 Create the heuristic file
Create the following python file and save it in the code folder. There is one functional task (func_movie) and one anatomical (t1w). Dataset_3 and 4 have a field map as well (fmap_phase and fmap_magnitude) 

Create a heuristic to automatically convert the files:
```{python}
import os
def create_key(template, outtype=('nii.gz',), annotation_classes=None):
    if template is None or not template:
        raise ValueError('Template must be a valid format string')
    return template, outtype, annotation_classes
def infotodict(seqinfo):
    """Heuristic evaluator for determining which runs belong where
    allowed template fields - follow python string module:
    item: index within category
    subject: participant id
    seqitem: run number during scanning
    subindex: sub index within group
    session: session id (only for dataset_1)
    """
    
    t1w1 = create_key('sub-{subject}/{session}/anat/sub-{subject}_{session}_T1w')
    func_movie1 = create_key('sub-{subject}/{session}/func/sub-{subject}_{session}_task-movie_bold')

    t1w = create_key('sub-{subject}/anat/sub-{subject}_T1w')
    func_movie = create_key('sub-{subject}/func/sub-{subject}_task-movie_bold')
    func_movie_echo_1 = create_key('sub-{subject}/func/sub-{subject}_task-movie_echo-1_bold')
    func_movie_echo_2 = create_key('sub-{subject}/func/sub-{subject}_task-movie_echo-2_bold')
    fmap_phase = create_key('sub-{subject}/fmap/sub-{subject}_phasediff')
    fmap_magnitude = create_key('sub-{subject}/fmap/sub-{subject}_magnitude')
    
    info = {t1w1: [], func_movie1: [], t1w: [], func_movie: [], fmap_phase: [], fmap_magnitude: [],
            func_movie_echo_1: [], func_movie_echo_2: []} 
    
    for idx, s in enumerate(seqinfo):
        if ('T1W_1mm_sag SENSE' in s.protocol_name):
            info[t1w1].append(s.series_id)
        if ('ToM_PartlyCloudy SENSE' in s.protocol_name):
            info[func_movie1].append(s.series_id)
        if ('t1_mpr_ns_sag_iso_ADNI_32ch' in s.protocol_name):
            info[t1w].append(s.series_id)
        if ('t1_mpr_ns_sag_P2_ADNI_32ch' in s.protocol_name):
            info[t1w].append(s.series_id)
        if (s.dim4 == 175) and ('FMRI_MB2_p2_2MMISO_TR2_movie' in s.protocol_name):
            info[func_movie].append(s.series_id)
        if (s.dim4 == 175) and ('FMRI_MB2_movie_p2_2MMISO_TR2' in s.protocol_name):
            info[func_movie].append(s.series_id)
        if (s.dim4 == 170) and ('ep2d_ToM_Loc' in s.protocol_name):
            info[func_movie].append(s.series_id)
        if (s.dim4 == 175) and ('ep2d_ToM_Loc' in s.protocol_name):
            info[func_movie].append(s.series_id)
        if (s.dim4 == 175) and ('ep2d_ToM_Loc_boldTR2' in s.protocol_name):
            info[func_movie].append(s.series_id)
        if (s.TE == 13) and ('BP_ep2d_multiecho_32ch_p3_TOM' in s.protocol_name):
            info[func_movie_echo_1].append(s.series_id)
        if (s.TE == 31.36) and ('BP_ep2d_multiecho_32ch_p3_TOM' in s.protocol_name):
            info[func_movie_echo_2].append(s.series_id)
        if (s.dim3 == 92) and ('gre_field_mapping_AAH' in s.protocol_name):
            info[fmap_magnitude].append(s.series_id)
        if (s.dim3 == 46) and ('gre_field_mapping_AAH' in s.protocol_name):
            info[fmap_phase].append(s.series_id)
        if (s.dim3 == 64) and ('gre_field_mapping_AAH' in s.protocol_name):
            info[fmap_magnitude].append(s.series_id)
        if (s.dim3 == 32) and ('gre_field_mapping_AAH' in s.protocol_name):
            info[fmap_phase].append(s.series_id)
    return info
```

Use the heuristic file to convert the Dicom files to .nii.gz (nifti) and create .json files:
```{bash}
docker run --rm -it -v /Volumes/Project0255/:/base nipy/heudiconv:latest -d /base/dataset_4/sourcedata/sub-{subject}/*.IMA -o /base/dataset_4 -f /base/code/heuristic_anthrom.py -s 401 -c dcm2niix -b --overwrite
```

For dataset_1 (for dataset_1 add ses-{session}/ and --ss 01 and .dcm). Movie for sub-101 and 102 is in ses-02:
```{bash}
docker run --rm -it -v /Volumes/Project0255/:/base nipy/heudiconv:latest -d /base/dataset_1/sourcedata/sub-{subject}/ses-{session}/*.dcm -o /base/dataset_1 -f /base/code/heuristic_anthrom.py -s 121 -ss 02 -c dcm2niix -b --overwrite
```

On the grid do (Sub-116 was done manually in dcm2niigui): 

Type in bash before running

Dataset_1:
```{bash}
singularity run -B /analyse/Project0255/:/base /analyse/Project0255/my_images/heudiconv_latest.sif -d /base/dataset_1/sourcedata/sub-{subject}/ses-{session}/*.dcm -o /base/dataset_1/ -f /base/code/heuristic_anthrom.py -s 116 -ss 01 -c dcm2niix -b --overwrite
```

Dataset_2 - 4:
```{bash}
singularity run -B /analyse/Project0255/:/base /analyse/Project0255/my_images/heudiconv_latest.sif -d /base/dataset_2/sourcedata/sub-{subject}/*.IMA -o /base/dataset_2/ -f /base/code/heuristic_anthrom.py -s 201 -c dcm2niix -b --overwrite
```

## 2.3 Anonymize the data 
Deface using [Pydeface](https://github.com/poldracklab/pydeface):
```{bash}
#!/bin/bash

set -e 
####For loop that defaces the MRI per subject and replaces the old MRI with the new defaced MRI
rootfolder=/Volumes/Project0255/dataset_4

for subj in 401; do
	echo "Defacing participant $subj"
pydeface ${rootfolder}/sub-${subj}/anat/sub-${subj}_T1w.nii.gz
rm -f ${rootfolder}/sub-${subj}/anat/sub-${subj}_T1w.nii.gz
mv ${rootfolder}/sub-${subj}/anat/sub-${subj}_T1w_defaced.nii.gz ${rootfolder}/sub-${subj}/anat/sub-${subj}_T1w.nii.gz 
done
```

For dataset_1:
ses-01: 101 102 103 107 112 113 117 118 119 122 123 124 128
ses-02: 104 105 106 108 109 110 111 115 116 120 121 125 126 127
```{bash}
#!/bin/bash

set -e 
rootfolder=/Volumes/Project0255/dataset_1

for subj in 129; do
	echo "Defacing participant $subj"
for session in 01; do
for echo in 1 2 3 4 5; do
pydeface ${rootfolder}/sub-${subj}/ses-${session}/anat/sub-${subj}_ses-${session}_echo-${echo}_T1w.nii.gz
rm -f ${rootfolder}/sub-${subj}/ses-${session}/anat/sub-${subj}_ses-${session}_echo-${echo}_T1w.nii.gz 
mv ${rootfolder}/sub-${subj}/ses-${session}/anat/sub-${subj}_ses-${session}_echo-${echo}_T1w_defaced.nii.gz ${rootfolder}/sub-${subj}/ses-${session}/anat/sub-${subj}_ses-${session}_echo-${echo}_T1w.nii.gz 
done
done
done
```

## 2.4 Update the .json file for the fmaps for dataset_3 and dataset_4
You need to specify “IntendedFor” field in the _phasediff.json files to point which scans the estimated fieldmap should be applied to.

Run the following script (thanks to Michele Svanera for the code):
```{python}
python change_json.py
```

## 2.5 Combine the dual-echo runs for dataset_4
For dataset_4 we need to combine the two echo's (see [NeuroStar](https://neurostars.org/t/fmriprep-does-not-combine-multi-echo-timeseries/3398/2) for more info. We created a dual_sum volume by adding the two images together (see [Halai et al. 2014](https://onlinelibrary.wiley.com/doi/full/10.1002/hbm.22463). 

Run the following script (thanks to Tyler Morgan for the code):
```{python}
python sum_echo.py
```

## 2.6 Theory-of-Mind event protocols 
Create tsv file for functional localiser. Event coding (in s; 10s of fixation before movie starts; accounting for hemodynamic lag) is based on Richardson et al. 2018 - reverse correlation analyses. 
 
Note: For sub-322 the trigger was at the start of the movie (thus create a different tsv, with event - 10s).
Check the triggers for dataset_1.
```{r}
PartlyCloudy <- data.frame(onset = c(86, 98, 120, 176, 238, 252, 300, 70, 92, 106, 136, 194, 210, 228, 262, 312), #create the events (same for every sub)
                           duration = c(4, 6, 4, 16, 6, 8, 6, 4, 2, 4, 10, 4, 12, 6, 6, 4),
                           trial_type = c(rep("mental",7), rep("pain",9)))

#dataset_1
for (sub in 102:129){ #note: localisers for sub-101 are in ses-02
  filename = paste("/Volumes/Project0255/dataset_1/sub-", sub, "/ses-01/func/sub-", sub, "_ses-01_task-movie_events.tsv", sep ="")
write.table(PartlyCloudy, file = filename, sep="\t", row.names = FALSE, quote = FALSE)
}
#dataset_2
for (sub in 201:235){ 
  filename = paste("/Volumes/Project0255/dataset_2/sub-", sub, "/func/sub-", sub, "_task-movie_events.tsv", sep ="")
write.table(PartlyCloudy, file = filename, sep="\t", row.names = FALSE, quote = FALSE)
}
#dataset_3
for (sub in 301:322){ #note: localisers for sub-322 should have t-10 (no trigger) <-manually correct this
  filename = paste("/Volumes/Project0255/dataset_3/sub-", sub, "/func/sub-", sub, "_task-movie_events.tsv", sep ="")
write.table(PartlyCloudy, file = filename, sep="\t", row.names = FALSE, quote = FALSE)
}
#dataset_4
for (sub in 401:422){ 
  filename = paste("/Volumes/Project0255/dataset_4/sub-", sub, "/func/sub-", sub, "_task-movie_events.tsv", sep ="")
write.table(PartlyCloudy, file = filename, sep="\t", row.names = FALSE, quote = FALSE)
}
```

## 2.6 BIDS validation
Use the BIDS-Validator to check if the dataset is BIDS compliant:
```{bash}
docker run -ti --rm -v /Volumes/Project0255/dataset_4:/data:ro bids/validator /data
```

# 3. Preprocessing {.tabset}

## 3.1 Run MRQIC
MRIQC is a docker tool to do quality control of the data. More info [here](https://poldracklab.github.io/mriqc/).

MRIQC 0.14.2 was used:
```{bash}
docker run -it --rm -v /Volumes/Project0255/dataset_1/:/data:ro -v /Volumes/Project0255/dataset_1/derivatives/mriqc:/out poldracklab/mriqc:0.14.2 /data /out participant --participant-label 101 -m T1w bold --ica --fft-spikes-detector 
```

On the grid do (cd in /analyse folder):
```{bash}
singularity run --cleanenv /analyse/Project0255/my_images/mriqc-0.14.2.simg /analyse/Project0255/dataset_1 /analyse/Project0255/dataset_1/derivatives/mriqc participant --participant-label 123 -m T1w bold --ica --fft-spikes-detector -w /analyse/Project0255/work
```

Run it seperately for the datasets. Change participant to group to create the group reports:
```{bash}
docker run -it --rm -v /Volumes/Project0255/dataset_4/:/data:ro -v /Volumes/Project0255/dataset_4/derivatives/mriqc:/out poldracklab/mriqc:0.14.2 /data /out group
```

## 3.2 Compare MRIQC
Plot the output. This is based on [MRIQCeption](https://github.com/elizabethbeard/mriqception). The MRIQCeption Visualization by Catherine Walsh was adapted. Adjust the filter if you want to look at different measures.

Adjust this to your liking (e.g. bold: fd_mean, fd_perc, dvars_std, dvars_vstd, gcor, tsnr, t1w: cjv, cnr, snr, efc, inu, wm2max, fwhm) and modality (bold or t1w):
```{r}
QCmeasure <- "fd_mean" 
modality <- "bold"
```

Run the following code. Change the script below to load the group results for the different datasets:
```{r}
#libraries
library("tidyverse")
source("/Volumes/Project0255/code/R_rainclouds.R")

#load own data
DF.dataset1  <- read_tsv(file = paste("/Volumes/Project0255/dataset_1/derivatives/mriqc/group_", modality, ".tsv", sep ="")) %>%
  gather("measure", "value", 2:46) %>%
  select("bids_name","measure", "value")

DF.dataset2 <- read_tsv(file = paste("/Volumes/Project0255/dataset_2/derivatives/mriqc/group_", modality, ".tsv", sep ="")) %>%
  gather("measure", "value", 2:46) %>%
  select("bids_name","measure", "value")

DF.dataset3 <- read_tsv(file = paste("/Volumes/Project0255/dataset_3/derivatives/mriqc/group_", modality, ".tsv", sep ="")) %>%
  gather("measure", "value", 2:46) %>%
  select("bids_name","measure", "value")

DF.dataset4 <- read_tsv(file = paste("/Volumes/Project0255/dataset_4/derivatives/mriqc/group_", modality, ".tsv", sep ="")) %>%
  gather("measure", "value", 2:46) %>%
  select("bids_name","measure", "value") 

#select the most relevant measures
#selectionMeasure <- c("snr", "tsnr", "efc", "fber", "gsr_x", "gsr_y", "dvars_nstd", "dvars_std", "dvars_vstd", "gcor", "fd_mean", "fd_number", "fd_percentage", "spikes", "aor", "aqi")

#combine data
DF.full <- bind_rows(DF.dataset1, DF.dataset2, DF.dataset3,  DF.dataset4, .id = "dataset") %>%
  group_by(dataset) %>% 
  filter(measure == QCmeasure) #%in% c(selectionMeasure)) 

#create raincloud plot (check out the [github](https://github.com/RainCloudPlots/) or [preprint](https://wellcomeopenresearch.org/articles/4-63/v1)
p <- ggplot(DF.full,aes(x=dataset,y=value,fill=dataset))+
  geom_flat_violin(position=position_nudge(x = .2, y = 0),adjust =2, trim = FALSE, alpha = .5, colour = NA)+
  geom_point(aes(colour = dataset), position=position_jitter(width = .05), size = .5, shape = 20)+
  geom_boxplot(aes(x=dataset,y=value),position=position_nudge(x = .1, y = 0),outlier.shape = NA, alpha = .5, width = .1, colour = "black")+ 
  #facet_wrap(. ~ dataset) +
  theme_classic() + ylab(QCmeasure) + scale_fill_brewer(palette = "Reds") +
  scale_colour_brewer(palette = "Reds") + ggtitle(paste("Comparison of", modality, "QC measure", QCmeasure, "between datasets")) +
  facet_wrap(~measure)
p
```

## 3.3 fMRIprep 
fMRIprep is a docker tool for preprocessing of the fMRI data. More info [here](https://fmriprep.readthedocs.io/en/stable/#)

fMRIprep version 1.5.2 was used on a local iMac.

If you run into memory problems you can use --skip_bids_validation; skipped the --write-graph flag to save space, and --use-syn-sdc only for dataset_1 and datatset_2.

If run on the GRID, cd into the analyse folder and run:
```{bash}
singularity run --cleanenv /analyse/Project0255/my_images/fmriprep-1.5.2.simg /analyse/Project0255/dataset_1/ /analyse/Project0255/dataset_1/derivatives participant --participant-label sub-129 --fs-license-file /analyse/Project0255/my_images/license.txt --skip_bids_validation --use-syn-sd --fs-no-reconall -w /analyse/Project0255/work/compute00
```

Resize functional files for two participants (sub-117 and sub-125) from dataset_1 (sub-{sub}_ses-01_task-movie_space-MNI152NLin2009cAsym_desc-preproc_bold.nii) to allow for group comparison (run this in MATLAB):
```{}
voxsiz = [3 3 3.5]; % new voxel size {mm}
V = spm_select([1 Inf],'image');
V = spm_vol(V);
for i=1:numel(V)
   bb        = spm_get_bbox(V(i));
   VV(1:2)   = V(i);
   VV(1).mat = spm_matrix([bb(1,:) 0 0 0 voxsiz])*spm_matrix([-1 -1 -1]);
   VV(1).dim = ceil(VV(1).mat \ [bb(2,:) 1]' - 0.1)';
   VV(1).dim = VV(1).dim(1:3);
   spm_reslice(VV,struct('mean',false,'which',1,'interp',0)); % 1 for linear
end
```

# 4. Analyses {.tabset}

## 4.1 Example script for first-level analysis
Example MATLAB script (dataset 3):
```{}
%========================================================================
%     SPM first-level analysis for fmriprep data in BIDS format
%========================================================================
%     This script is written by Ruud Hortensius and Michaela Kent
%     (University of Glasgow). Based upon a script written by 
%     Shengdong Chen (ACRLAB) and Stephan Heunis (TU Eindhoven).
%
%     Added: loop for runs
%     Parameters as specified by Saxelab: https://saxelab.mit.edu/theory-mind-and-pain-matrix-localizer-movie-viewing-experiment
%
%     Last updated: January 2020
%========================================================================

clear all 

%% Inputdirs
BIDS = spm_BIDS('/Volumes/Project0255/dataset_3/'); % Parse BIDS directory (easier to query info from dataset)
BIDSpreproc=fullfile(BIDS.dir,'derivatives/fmriprep'); % get the preprocessed directory

%sublist = spm_BIDS(BIDS,'subjects') %number of subjects
sublist = transpose(BIDS.participants.participant_id) %get subject list including the 'sub'
subex = [] 
sublist(subex) = []; %update the subjects

taskid='movie'; %specify the task to be analysed

numScans=175;  %The number of volumes per run <---

TR = 2;     % Repetition time, in seconds <---
unit='secs'; % onset times in secs (seconds) or scans (TRs)

%% Outputdirs
outputdir=fullfile(BIDS.dir,'derivatives/bids_spm/first_level');  % root outputdir for sublist
spm_mkdir(outputdir,char(sublist), char(taskid)); % create output directory

%% Loop for sublist
spm('Defaults','fMRI'); %Initialise SPM fmri
spm_jobman('initcfg');  %Initialise SPM batch mode

for i=1:length(sublist)
    
    
    %% Output dirs where you save SPM.mat
    subdir=fullfile(outputdir,sublist{i},taskid);
    
    %% Basic parameters
    matlabbatch{1}.spm.stats.fmri_spec.dir = {subdir};
    matlabbatch{1}.spm.stats.fmri_spec.timing.units = unit; % specified above
    matlabbatch{1}.spm.stats.fmri_spec.timing.RT = TR; % specified above
    matlabbatch{1}.spm.stats.fmri_spec.timing.fmri_t = 68; %<--- look into this
    matlabbatch{1}.spm.stats.fmri_spec.timing.fmri_t0 = 34; %<--- look into this
    
    %% Load input files for task specilized
    sub_inputdir=fullfile(BIDSpreproc,sublist{i},'func');
    sub_inputdirA=fullfile(BIDSpreproc,sublist{i},'anat');
    
    %------------------------------------------------------------------
    func=[sub_inputdir,filesep,sublist{i},'_task-',taskid,'_space-MNI152NLin2009cAsym_desc-preproc_bold.nii.gz'];
    func_nii=[sub_inputdir,filesep,sublist{i}, '_task-',taskid,'_space-MNI152NLin2009cAsym_desc-preproc_bold.nii'];
    if ~exist(func_nii,'file'), gunzip(func)
    end
    run_scans = spm_select('Expand',func_nii);
    
    matlabbatch{1}.spm.stats.fmri_spec.sess(1).scans = cellstr(run_scans);
    
    % Load the condition files
    events = spm_load([BIDS.dir,filesep,sublist{i},'/func/', sublist{i},'_task-',taskid,'_events.tsv']) %load TSV condition file
    
    names{1} = 'mental';
    t = strcmp(names{1}, events.trial_type)
    onsets{1} = transpose(events.onset(t));
    durations{1} = transpose(events.duration(t));
    
    names{2} = 'pain';
    t = strcmp(names{2}, events.trial_type)
    onsets{2} = transpose(events.onset(t));
    durations{2} = transpose(events.duration(t));
    
    
    file_mat = [subdir,filesep,sublist{i},'_task-',taskid,'_conditions.mat'];
    save(file_mat, 'names', 'onsets', 'durations')
    matlabbatch{1}.spm.stats.fmri_spec.sess(1).cond = struct('name', {}, 'onset', {}, 'duration', {}, 'tmod', {}, 'pmod', {}, 'orth', {});
    matlabbatch{1}.spm.stats.fmri_spec.sess(1).multi = {file_mat};
    
    % Confounds file
    confounds=spm_load([sub_inputdir,filesep,sublist{i},'_task-',taskid,'_desc-confounds_regressors.tsv'])  ;
    confounds_matrix=[confounds.framewise_displacement, confounds.a_comp_cor_00,confounds.a_comp_cor_01,confounds.a_comp_cor_02,confounds.a_comp_cor_03, confounds.a_comp_cor_04,confounds.a_comp_cor_05, confounds.trans_x, confounds.trans_y, confounds.trans_z, confounds.rot_x, confounds.rot_y, confounds.rot_z];
    confounds_name=[subdir,filesep,sublist{i},'_task-',taskid,'_acomcorr.txt'];
    
    confounds_matrix(isnan(confounds_matrix)) = 0 % nanmean(confounds_matrix); %check this <-----
    
    if ~exist(confounds_name,'file'), dlmwrite(confounds_name,confounds_matrix)
    end
    matlabbatch{1}.spm.stats.fmri_spec.sess(1).multi_reg = {confounds_name};
    matlabbatch{1}.spm.stats.fmri_spec.sess(1).hpf = 128; % High-pass filter (hpf) without using consine
    
    %% Model  (Default)
    matlabbatch{1}.spm.stats.fmri_spec.fact = struct('name', {}, 'levels', {});
    matlabbatch{1}.spm.stats.fmri_spec.bases.hrf.derivs = [0 0];
    matlabbatch{1}.spm.stats.fmri_spec.volt = 1;
    matlabbatch{1}.spm.stats.fmri_spec.global = 'Scaling';
    mask=[sub_inputdirA,filesep,sublist{i},'_space-MNI152NLin2009cAsym_label-GM_probseg.nii.gz'];
    mask_nii=[sub_inputdirA,filesep,sublist{i},'_space-MNI152NLin2009cAsym_label-GM_probseg.nii'];
    
    if ~exist(mask_nii,'file'), gunzip(mask)
    end
    mask_nii=[mask_nii, ',1']
    matlabbatch{1}.spm.stats.fmri_spec.mask = {mask_nii};
    matlabbatch{1}.spm.stats.fmri_spec.mthresh = 0.8;
    matlabbatch{1}.spm.stats.fmri_spec.cvi = 'none';
    
    %% Model estimation (Default)subdir
    matlabbatch{2}.spm.stats.fmri_est.spmmat = {[subdir filesep 'SPM.mat']};
    matlabbatch{2}.spm.stats.fmri_est.write_residuals = 0;
    matlabbatch{2}.spm.stats.fmri_est.method.Classical = 1;
    
    %% Contrasts
    matlabbatch{3}.spm.stats.con.spmmat = {[subdir filesep 'SPM.mat']};
    % Set contrasts of interest.
    matlabbatch{3}.spm.stats.con.consess{1}.tcon.name = 'mental_pain';
    matlabbatch{3}.spm.stats.con.consess{1}.tcon.convec = [1 -1 0 0 0 0 0 0 0 0 0 0 0 0 0];
    matlabbatch{3}.spm.stats.con.consess{2}.tcon.name = 'pain_mental';
    matlabbatch{3}.spm.stats.con.consess{2}.tcon.convec = [-1 1 0 0 0 0 0 0 0 0 0 0 0 0 0];
    matlabbatch{3}.spm.stats.con.delete = 0;
    
    %% Run matlabbatch jobs
    spm_jobman('run',matlabbatch);
    
end
```

## 4.2 First-level analysis 
Run the followin commands in the terminal.

Dataset_1:
```{bash}
cd "/Volumes/Project0255/code/"
matlab -batch "BIDS_SPM_firstlevel_tom_dataset1"
matlab -batch "BIDS_SPM_firstlevel_tom_dataset1_ppn101"
matlab -batch "BIDS_SPM_firstlevel_tom_dataset1_ppn114"
```

Dataset_2:
```{bash}
cd "/Volumes/Project0255/code/"
matlab -batch "BIDS_SPM_firstlevel_tom_dataset2_ppn201_202"
```

Dataset_3:
```{bash}
cd "/Volumes/Project0255/code/"
matlab -batch "BIDS_SPM_firstlevel_tom_dataset3"
```

Dataset_4:
```{bash}
cd "/Volumes/Project0255/code/"
matlab -batch "BIDS_SPM_firstlevel_tom_dataset4"
```

## 4.3 Create group mask
Create a group average for the GM_probseg.nii for each dataset in Matlab (change the code per dataset; run this in MATLAB):
```{}
clear all

spm('Defaults','fMRI');
spm_jobman('initcfg');  

BIDS = spm_BIDS('/Volumes/Project0255/dataset_3'); %change this
BIDSfirst=fullfile(BIDS.dir,'derivatives/fmriprep'); 

sublist = transpose(BIDS.participants.participant_id) 
subex = [] %subjects that don't have an anatomical (14 dataset_1)
sublist(subex) = []; 

for i=1:length(sublist)
    subdir=fullfile(BIDSfirst,sublist{i}, 'anat')
    matlabbatch{1}.spm.util.imcalc.input{i,1} = [subdir, filesep, sublist{i}, '_space-MNI152NLin2009cAsym_label-GM_probseg.nii,1']
end
matlabbatch{1}.spm.util.imcalc.output = 'dataset3_averageGM';
matlabbatch{1}.spm.util.imcalc.outdir = {'/Volumes/Project0255/dataset_3/derivatives/fmriprep'}; %change this
matlabbatch{1}.spm.util.imcalc.expression = 'mean(X)';
matlabbatch{1}.spm.util.imcalc.var = struct('name', {}, 'value', {});
matlabbatch{1}.spm.util.imcalc.options.dmtx = 1;
matlabbatch{1}.spm.util.imcalc.options.mask = 0;
matlabbatch{1}.spm.util.imcalc.options.interp = 1;
matlabbatch{1}.spm.util.imcalc.options.dtype = 4;

spm_jobman('run',matlabbatch);
```

## 4.4 Example script for second-level whole-brain analysis
Example MATLAB script (dataset 3):
```{}
%========================================================================
%     SPM second-level analysis for fmriprep data in BIDS format
%========================================================================
%     This script is written by Ruud Hortensius and Michaela Kent 
%     (University of Glasgow) 
%
%     Last updated: January 2020
%========================================================================


clear all

%% Inputdirs
BIDS = spm_BIDS('/Volumes/Project0255/dataset_3'); % Parse BIDS directory (easier to query info from dataset)
BIDSfirst=fullfile(BIDS.dir,'derivatives/bids_spm/first_level'); % get the first-level directory

sublist = transpose(BIDS.participants.participant_id) %get subject list including the 'sub'
subex = [] %subjects that don't have a second-session
sublist(subex) = []; %update the subjects

%nsession = spm_BIDS(BIDS,'sessions') %how many sessions? careful, sometimes collapsing across sessions not wanted
%sessionid = 'ses-01' %get session id

taskid='movieHC'; %specify the task to be analysed

contrast='con_0001'; %specify the contrast to be analysed
contrast_name='mental_hc'; %specify the name of the contrast

smoothing = 1; %soomthing of first-level contrasts (1=yes, 0=no)
s_kernel = [5 5 5]

%% Outputdirs
outputdir=fullfile(BIDS.dir,'derivatives/bids_spm/second_level', char(contrast_name));  % root outputdir for sublist
spm_mkdir(outputdir); % create output directory 

spm('Defaults','fMRI'); %Initialise SPM fmri
spm_jobman('initcfg');  %Initialise SPM batch mode


%% Smoothing of first-level contrasts
if smoothing == 1
    for i=1:length(sublist)
        subdir=fullfile(BIDSfirst,sublist{i}, taskid);
        matlabbatch{1}.spm.spatial.smooth.data{i,1} = [subdir, filesep, contrast, '.nii,1'];
        matlabbatch{1}.spm.spatial.smooth.fwhm = s_kernel;
        matlabbatch{1}.spm.spatial.smooth.dtype = 0;
        matlabbatch{1}.spm.spatial.smooth.im = 0;
        matlabbatch{1}.spm.spatial.smooth.prefix = 's';
    end
    spm_jobman('run',matlabbatch);
    
    clear matlabbatch
end


%% Load the contrasts
matlabbatch{1}.spm.stats.factorial_design.dir = {outputdir};

for i=1:length(sublist)
    subdir=fullfile(BIDSfirst,sublist{i}, taskid);
    if smoothing == 1
        matlabbatch{1,1}.spm.stats.factorial_design.des.t1.scans{i,1} = [subdir, filesep, 's', contrast, '.nii,1']
    else
        matlabbatch{1,1}.spm.stats.factorial_design.des.t1.scans{i,1} = [subdir, filesep, contrast, '.nii,1']
    end
end

matlabbatch{1}.spm.stats.factorial_design.cov = struct('c', {}, 'cname', {}, 'iCFI', {}, 'iCC', {});
matlabbatch{1}.spm.stats.factorial_design.multi_cov = struct('files', {}, 'iCFI', {}, 'iCC', {});
matlabbatch{1}.spm.stats.factorial_design.masking.tm.tm_none = 1;
matlabbatch{1}.spm.stats.factorial_design.masking.im = 1;
matlabbatch{1}.spm.stats.factorial_design.masking.em = {''};
matlabbatch{1}.spm.stats.factorial_design.globalc.g_omit = 1;
matlabbatch{1}.spm.stats.factorial_design.globalm.gmsca.gmsca_no = 1;
matlabbatch{1}.spm.stats.factorial_design.globalm.glonorm = 1;

%% Model estimation 
matlabbatch{2}.spm.stats.fmri_est.spmmat = {[outputdir filesep 'SPM.mat']};
matlabbatch{2}.spm.stats.fmri_est.write_residuals = 0;
matlabbatch{2}.spm.stats.fmri_est.method.Classical = 1;

%% Contrast
%--------------------------------------------------------------------------
matlabbatch{3}.spm.stats.con.spmmat = {[outputdir filesep 'SPM.mat']};
matlabbatch{3}.spm.stats.con.consess{1}.tcon.name = contrast_name;
matlabbatch{3}.spm.stats.con.consess{1}.tcon.weights = 1;
matlabbatch{3}.spm.stats.con.consess{1}.tcon.sessrep = 'none';
matlabbatch{3}.spm.stats.con.delete = 0;

%% Results
%--------------------------------------------------------------------------
matlabbatch{4}.spm.stats.results.spmmat = {[outputdir filesep 'SPM.mat']};
matlabbatch{4}.spm.stats.results.conspec.titlestr = '';
matlabbatch{4}.spm.stats.results.conspec.contrasts = 1;
matlabbatch{4}.spm.stats.results.conspec.threshdesc = 'none';
matlabbatch{4}.spm.stats.results.conspec.thresh = 0.001;
matlabbatch{4}.spm.stats.results.conspec.extent = 5;
matlabbatch{4}.spm.stats.results.conspec.conjunction = 1;
matlabbatch{4}.spm.stats.results.conspec.mask.image.name = {'/Volumes/Project0255/dataset_3/derivatives/fmriprep/dataset3_averageGM.nii,1'};
matlabbatch{4}.spm.stats.results.conspec.mask.image.mtype = 0;
matlabbatch{4}.spm.stats.results.units = 1;
matlabbatch{4}.spm.stats.results.export{1}.pdf = true;
matlabbatch{4}.spm.stats.results.export{2}.jpg = true;
matlabbatch{4}.spm.stats.results.export{3}.csv = true;
matlabbatch{4}.spm.stats.results.export{4}.tspm.basename = contrast_name;

%% Run matlabbatch jobs
spm_jobman('run',matlabbatch);

```

## 4.5 Second-level whole-brain analysis 
Run it seperately for the datasets:
```{bash}
cd "/Volumes/Project0255/code/"
matlab -batch "BIDS_SPM_secondlevel_tom_dataset1"
matlab -batch "BIDS_SPM_secondlevel_tom_dataset2"
matlab -batch "BIDS_SPM_secondlevel_tom_dataset3"
matlab -batch "BIDS_SPM_secondlevel_tom_dataset4"
```

## 4.6 ToM fROI analysis  
Run the following (ROI_extract.m) script in matlab (change the code per dataset and roi and contrast - run this in MATLAB):
```{}
%========================================================================
%     fROI analysis for fmriprep data in BIDS format
%========================================================================
%     This script is written by  Michaela Kent and Ruud Hortensius
%     (University of Glasgow) 
%
%     Last updated: January 2020
%========================================================================
clear all
%add marsbar to path
marsbar('on')

%% Inputdirs
BIDS = spm_BIDS('/Volumes/Project0255/dataset_4'); % parse BIDS directory (easier to query info from dataset)
BIDSsecond=fullfile(BIDS.dir,'derivatives/bids_spm/second_level'); % get the second-level directory

contrastid = 'mental' %can be either mental (vs. pain) or pain (vs. mental)
networkid = 'tom' %can be either tom (theory-of-mind) or pain (pain matrix)

%% Outputdirs
outputdir=fullfile(BIDS.dir,'derivatives/roi', networkid);  % root outputdir for sublist
spm_mkdir(outputdir); % create output directory 

%% Load design matrix
spm_name = spm_load(fullfile(BIDSsecond, filesep, contrastid , 'SPM.mat'))
D  = mardo(spm_name);


%% Load rois
parcels = dir(fullfile(BIDS.dir,'derivatives/parcels/', networkid))
parcels = struct2cell(parcels(arrayfun(@(x) ~strcmp(x.name(1),'.'),parcels)))
parcels(2:6,:) = []

for i=1:length(parcels) 
    roi = fullfile(BIDS.dir,'derivatives/parcels/',  networkid, parcels{i})
    R  = maroi(roi);
    % Fetch data into marsbar data object
    mY  = get_marsy(R, D, 'mean');
    roi_data = summary_data(mY); % get summary time course(s)
    roi_name = [outputdir,filesep,parcels{i},'.tsv'];
    dlmwrite(roi_name,roi_data);
end
```

## 4.7 Custom steps
Add sub-201 and sub-202 to get the fROI data (different parameters, not included in the whole-brain analysis):
```{bash}
cd "/Volumes/Project0255/code/"
matlab -batch "BIDS_SPM_secondlevel_tom_dataset2_201_202"
matlab -batch "ROI_extract_201_202"
```

# 5. IDAQ {.tabset}

## 5.1 Calculation of individual scores:
Dataset 2: sub-206-212, 219, 221-22, 224-25, 228, 231, 233-34 completed a version with the scale ranging from 1-10 instead of 0-10. Analyses should be run with and without these participants:
```{r}
sub_ex = c(206:212, 219, 221:222, 224:225, 228, 231, 233:234)
```

Get the IDAQ data for all the participants:
```{r}
library(tidyverse)

#load data (/Volumes/Project0255/dataset_1/sourcedata/)
DF.d1  <- read_csv(file = paste("IDAQ_dataset1.csv", sep ="")) %>%
  gather("sub", "value", 4:32)

DF.d2  <- read_csv(file = paste("IDAQ_dataset2.csv", sep ="")) %>%
  gather("sub", "value", 4:38) 

DF.d3  <- read_csv(file = paste("IDAQ_dataset3.csv", sep ="")) %>%
  gather("sub", "value", 4:25) 

DF.d4  <- read_csv(file = paste("IDAQ_dataset4.csv", sep ="")) %>%
  gather("sub", "value", 4:25) 

DF.idaq <- bind_rows(DF.d1, DF.d2, DF.d3, DF.d4, .id = "dataset") %>%
  mutate(sub=gsub('sub-','',sub))%>%
  transform(sub=as.integer(sub)) %>%
  mutate(scale = as.factor(ifelse(scale == "IDAQ-NA", "IDAQNA", "IDAQ")))

rm(DF.d1, DF.d2, DF.d3, DF.d4)
```

## 5.2 Reliability of IDAQ
Check the reliability of the IDAQ scale:
```{r}
library("psych")

DF.idaq %>% 
  filter(scale == "IDAQ") %>%
  #filter(!sub %in% sub_ex) %>% 
  select(-scale, -subscale)  %>%
  spread(itemnr, value) %>%
  select(-sub, -dataset) %>%
  alpha(na.rm = TRUE)
```

## 5.3 Reliability of IDAQ-NA
Check the reliability of the IDAQ-NA scale:
```{r}
DF.idaq %>% 
  filter(scale == "IDAQNA") %>%
  filter(!sub %in%  sub_ex) %>% 
  select(-scale, -subscale)  %>%
  spread(itemnr, value) %>%
  select(-sub, -dataset) %>%
  alpha(na.rm = TRUE)
```

## 5.4 Differences between datasets
Test if there are differences in IDAQ and IDAQ-NA scores between datasets. 

Before fitting any model we establish which link function we need to use. This code is taken from [Kevin Stadler's github]( https://kevinstadler.github.io/blog/bayesian-ordinal-regression-with-random-effects-using-brms/). In short, it uses the ordinal package to (quickly) find the link function that fits the data:
```{r}
library(ordinal)
cumulativemodelfit <- function(formula, data, links=c("logit", "probit", "cloglog", "cauchit"),
    thresholds=c("flexible", "equidistant"), verbose=TRUE) {
  names(links) <- links
  names(thresholds) <- thresholds
  llks <- outer(links, thresholds,
    Vectorize(function(link, threshold)
      # catch error for responses with 2 levels
      tryCatch(ordinal::clm(formula, data=data, link=link, threshold=threshold)$logLik,
        error = function(e) NA)))
  print(llks)
  if (verbose) {
    bestfit <- which.max(llks)
    cat("\nThe best link function is ", links[bestfit %% length(links)], " with a ",
    thresholds[1 + bestfit %/% length(thresholds)], " threshold (logLik ", llks[bestfit],
    ")\n", sep="")
  }
  invisible(llks)
}
```

For the anthropomorphism subscale first:
```{r}
DF.test = DF.idaq %>% 
  filter(scale == "IDAQ") %>% 
  mutate_all(as.factor) %>%
  mutate(value = factor(value, levels=c(0:10), ordered=TRUE)) #add contrast coding?
```

Get the link function:
```{r}
cumulativemodelfit(value ~ 1, data=DF.test)
```

1. First cumulative ordinal model with dataset as fixed factor:
```{r}
library(brms)
options(mc.cores = parallel::detectCores()) #run once (run on multiple cores)

ord.1 <- brm(
  value ~ 1 + dataset,  
  data  = DF.test,  
  family  = cumulative("logit"),
  file = 'ord.1~simple.RDS'
) 
```

Get summary and marginal effects:
```{r}
summary(ord.1) #prob = .99  for 99 credible intervals
conditional_effects(ord.1, "dataset", categorical = TRUE)
plot(ord.1)
```

2. Second cumulative ordinal model with dataset as fixed factor and random intercepts for participant and itemnr:
```{r}
ord.2 <- brm(
  value ~ 1 + dataset +
    (1|sub) + (1|itemnr),   
  data  = DF.test,  
  family  = cumulative("logit"),
  file = 'ord.2~random.RDS'
) 
```

Get summary and marginal effects:
```{r}
summary(ord.2) #prob = .99  for 99 credible intervals
conditional_effects(ord.2, "dataset", categorical = TRUE)
```

3. Category-specific model:
```{r}
ord.3 <- brm(
  value ~ 1 + cs(dataset) +
    (cs(1)|sub) + (cs(1)|itemnr),
  data  = DF.test,  
  family = acat("logit"),
  file = 'ord.3~category.RDS'
)  
```

Get summary and marginal effects:
```{r}
summary(ord.3) #prob = .99  for 99 credible intervals
conditional_effects(ord.3, "dataset", categorical = TRUE)
```

4. Adjecent-category model without category-specific effects (to check if differences between model 2 and 3 are not due to different classes of ordinal models): 
```{r}
ord.4 <- brm(
  value ~ 1 + dataset +
    (1|sub) + (1|itemnr),
  data  = DF.test,  
  family = acat("logit"),
  file = 'ord.4~category2.RDS'
) 
```

Get summary and marginal effects: #should add 1|itemnr and 1|sub
```{r}
summary(ord.4) #prob = .99  for 99 credible intervals
conditional_effects(ord.4, "dataset", categorical = TRUE)
```

5. Unequal variances model:
```{r}
ord.5 <- brm(
  formula = bf(value ~ 1 + dataset) +
    lf(disc ~ 0 + dataset, cmc = FALSE),
  data = DF.test,
  family  = cumulative("logit"),
  file = 'ord.5~control.RDS'
) 
```

Get summary and marginal effects:
```{r}
summary(ord.5) #prob = .99  for 99 credible intervals
conditional_effects(ord.5, "dataset", categorical = TRUE)
```

6. Model comparison: 
```{r}
modelC1 <- LOO(ord.1, ord.2, ord.3, ord.4, ord.5)
save(modelC1, file="modelC1.RData")
load('modelC1.RData')
modelC1
```

7. Rerun winning model excluding the participants that completed the incorrect IDAQ version: 
```{r}
DF.test = DF.test %>% 
  filter(!sub %in% sub_ex) 

cumulativemodelfit(value ~ 1, data=DF.test)
```

8. Model 2 while excluding these participants: 
```{r}
ord.2E <- brm(
  value ~ 1 + dataset +
    (1|sub) + (1|itemnr),   
  data  = DF.test,  
  family = cumulative(link = "probit", threshold="equidistant"),
  file = 'ord.2E~random.RDS'
) 
```

Get summary and marginal effects:
```{r}
summary(ord.2E) #prob = .99  for 99 credible intervals
conditional_effects(ord.2E, "dataset", categorical = TRUE)
```


## 5.5 IDAQ per subject
Calculate the IDAQ per subject:
```{r}
DF.idaq <- DF.idaq %>%
  group_by(sub,dataset, scale, subscale) %>%
  summarise(score = sum(value, na.rm = TRUE)) %>%
  ungroup()%>%
  mutate_at(vars(-score),as.factor)

```

## 5.6 Visualise the scores
Visualise the scores across the datasets and scales:
```{r}
source("R_rainclouds.R") #/Volumes/Project0255/code

p <- DF.idaq %>%
  group_by(sub,dataset, scale) %>%
  summarise(score = sum(score)) %>%
  ggplot(.,aes(x=dataset,y=score,fill=dataset, group = dataset))+
  geom_flat_violin(position=position_nudge(x = .2, y = 0),adjust =2, trim = FALSE, alpha = .75, colour = "Black") +
  geom_point(aes(colour = dataset), position=position_jitter(width = .05), size = .5, shape = 21, colour = "Black") +
  geom_boxplot(aes(x=dataset,y=score),position=position_nudge(x = .1, y = 0),outlier.shape = NA, alpha = .5, width = .1, colour = "black") + 
  scale_fill_brewer(palette = "Blues") +
  scale_colour_brewer(palette = "Blues") +
  theme_classic() + 
  ylab(paste("score (0-150)")) + 
  ggtitle(paste("Comparison of IDAQ scores between datasets")) +
  theme(legend.position="none") +
  facet_wrap(~scale)
p
```

## 5.7 Median and interquartile range per dataset
Calculate the median IQR per dataset (table S2):
```{r}
DF.idaq %>%
  #filter(!sub %in%  sub_ex) %>% 
  group_by(sub,dataset, scale) %>%
  summarise(score = sum(score)) %>%
  group_by(dataset, scale) %>%
  summarise(median = median(score),
            iqr = IQR(score))
```

# 6. fROI results {.tabset}

## 6.1 Data wrangling
Create function to load the data for the different networks:
```{r}
library(fs)
roi_extract <- function(datasetno, substart, subend, network, nroi) {
  
  dir_ls(paste("dataset_", datasetno, "/derivatives/roi/", network, sep = ""), regexp = "\\.tsv$") %>% 
    map_dfr(read.delim, sep = "\t", .id = "id", header = FALSE)  %>%
    mutate(dataset = datasetno) %>%
    mutate(network = network) %>%
    mutate(network = str_extract(network, "tom|pain")) %>%
    mutate(id = str_extract(id, "dmpfc|mmpfc|vmpfc|ltpj|rtpj|prec|amcc|lmfg|rmfg|ls2|rs2|linsula|rinsula")) %>%
    rename(roi = id, contrast = V1) %>%
    mutate(sub = rep(substart:subend, times=nroi, each=1)) %>%
    select(5,3,4,1:2)
} 
```

Load the data for the Theory-of-Mind network:
```{r}
DF.d1 <- roi_extract(1, 101, 129, "tom", 6)
DF.d2.a <- roi_extract(2, 201, 202, "tom/201_202", 6)
DF.d2.b <- roi_extract(2, 203, 235, "tom", 6)
DF.d3 <- roi_extract(3, 301, 322, "tom", 6)
DF.d4 <- roi_extract(4, 401, 422, "tom", 6)

DF.temp <- bind_rows(DF.d1, DF.d2.a, DF.d2.b, DF.d3, DF.d4) 
```

Load the data for the Pain Matrix:
```{r}
DF.d1 <- roi_extract(1, 101, 129, "pain", 7)
DF.d2.a <- roi_extract(2, 201, 202, "pain/201_202/", 7)
DF.d2.b <- roi_extract(2, 203, 235, "pain", 7)
DF.d3 <- roi_extract(3, 301, 322, "pain", 7)
DF.d4 <- roi_extract(4, 401, 422, "pain", 7)

DF.roi <- bind_rows(DF.temp, DF.d1, DF.d2.a, DF.d2.b, DF.d3, DF.d4)

rm(DF.d1, DF.d2.a, DF.d2.b, DF.d3, DF.d4, DF.temp, DF.test)
```

Reorder ROI names for plots:
```{r}
order <- c("rtpj", "ltpj", "prec", "vmpfc","mmpfc","dmpfc", "rs2", "ls2", "rinsula", "linsula", "rmfg", "lmfg", "amcc")  

DF.roi <- DF.roi %>%
  mutate_at(vars(-contrast),as.factor) %>%
  group_by(sub, dataset) %>%
  mutate(roi = fct_relevel(roi, order))
```

## 6.2 Theory-of-Mind network activation across datasets:
Plot the ToM activity across regions and datasets:
```{r}
p1 <- DF.roi %>%
  filter(network == "tom") %>%
  ggplot(.,aes(x=roi,y=contrast,fill=roi))+
  geom_hline(yintercept = 0, color = "grey", linetype = 2) +
  geom_flat_violin(position=position_nudge(x = .2, y = 0),adjust =2, trim = FALSE, colour = "Black") +
  geom_point(aes(colour = roi, fill = roi), position=position_jitter(width = .05), size = .5, shape = 21, colour = "Black") +
  geom_boxplot(aes(x=roi,y=contrast),position=position_nudge(x = .1, y = 0),outlier.shape = NA, alpha = .5, width = .1, colour = "black") + 
  theme_classic() + 
  ylab(paste("contrast estimates (mental > pain)")) + 
  scale_fill_brewer(palette = "Blues") +
  scale_colour_brewer(palette = "Blues") + 
  ggtitle(paste("ToM network contrasts estimates across datasets")) + 
  theme(legend.position="none") +
  facet_wrap(~dataset) 
p1
```

## 6.3 Differences in ToM activation between datasets:
Test if for potential differences between datasets and rois:
```{r}
tom.compare <- brm(
  formula = contrast ~ roi * dataset,
  data = DF.roi %>% filter(network == "tom"),
  #family  = cumulative("logit"),
  file = 'tom.compare.RDS'
) 

summary(tom.compare)
plot(tom.compare)
conditional_effects(tom.compare)
```

## 6.4 Pain Matrix activation across datasets
Plot the Pain Matrix activity across regions and datasets:
```{r}
p2 <- DF.roi %>%
  filter(network == "pain") %>%
  ggplot(.,aes(x=roi,y=contrast,fill=roi))+
  geom_hline(yintercept = 0, color = "grey", linetype = 2) +
  geom_flat_violin(position=position_nudge(x = .2, y = 0),adjust =2, trim = FALSE, colour = "Black") +
  geom_point(aes(colour = roi, fill = roi), position=position_jitter(width = .05), size = .5, shape = 21, colour = "Black") +
  geom_boxplot(aes(x=roi,y=contrast),position=position_nudge(x = .1, y = 0),outlier.shape = NA, alpha = .5, width = .1, colour = "black") + 
  theme_classic() + 
  ylab(paste("contrast estimates (pain > mental)")) + 
  scale_fill_brewer(palette = "Reds") +
  scale_colour_brewer(palette = "Reds") + 
  ggtitle(paste("Pain matrix contrasts estimates across datasets")) + theme(legend.position="none") +
  facet_wrap(~dataset)
p2
```

## 6.5 Differences in Pain Matrix activation between datasets:
Test if for potential differences between datasets and rois:
```{r}
pain.compare <- brm(
  formula = contrast ~ roi * dataset,
  data = DF.roi %>% filter(network == "pain"),
  #family  = cumulative("logit"),
  file = 'pain.compare.RDS'
) 

summary(pain.compare)
plot(pain.compare)
conditional_effects(pain.compare)
```

## 6.6 Combine IDAQ scores and ROI data:
Create one DF:
```{r}
DF.roi <- DF.idaq %>% 
  group_by(sub,dataset, scale) %>%
  summarise(score = sum(score)) %>%
  ungroup() %>% 
  left_join(DF.roi, DF.idaq, by = c("sub","dataset"), keep = FALSE) %>%
  spread(key=scale, value=score) #change this (pivot_wider)
```

Center the variables for the formal analysis:
```{r}
DF.roi$cent_IDAQNA <- scale(DF.roi$IDAQNA, scale = TRUE)
DF.roi$cent_IDAQ <- scale(DF.roi$IDAQ, scale = TRUE)
DF.roi <- DF.roi %>% group_by(roi) %>% mutate(cent_contrast = scale(contrast, scale =TRUE))
```

# 7. IDAQ scores and ToM activity {.tabset}

## 7.1 Plot ToM and IDAQ
Create scatterplots with linear and non-linear lines: 
```{r}
library(patchwork)

p1 <- DF.roi %>%
  filter(network == "tom") %>%
  ggplot(aes(x=cent_IDAQ, y=cent_contrast)) +
  geom_point(alpha=0.5,show.legend = FALSE) +
  geom_smooth(method="lm", formula=y ~ x, se=TRUE, show.legend = FALSE, colour="#0072B2") +
  geom_smooth(method="lm", formula=y ~ x+ I(x^2), se=TRUE, show.legend=FALSE, colour = "#D55E00") +
  #coord_fixed(ratio = 25/1) +
  labs(
    x="IDAQ score",
    y="contrast (mental vs pain)"
  ) + theme_classic()

p2 <- DF.roi %>%
  filter(network == "tom") %>%
  ggplot(aes(x=cent_IDAQ, y=cent_contrast)) +
  geom_point(alpha=0.5,show.legend = FALSE) +
  geom_smooth(method="lm", formula=y ~ x, se=TRUE, show.legend = FALSE, colour="#0072B2") +
  geom_smooth(method="lm", formula=y ~ x+ I(x^2), se=TRUE, show.legend=FALSE, colour = "#D55E00") +
  #coord_fixed(ratio = 25/1) +
  labs(
    x="IDAQ score",
    y="contrast (mental vs pain)"
  ) + theme_classic() +
  facet_wrap(~roi)

p1 & p2
```

## 7.2 Create a function for the Bayesian regression models:

For the formal analysis we will test a linear and quadratic relationship between IDAQ and ToM network activity:
```{r}
DF.roi$cent_IDAQ2 <- DF.roi$cent_IDAQ^2
```

We run the models with uninformative (default) priors and create a function to run it for each region separately:
```{r}
reg_model <- function(region){
  brm(formula = cent_contrast ~ cent_IDAQ + cent_IDAQ2,
      data = DF.roi %>% filter(roi == region),
      family = gaussian,
      chains = 4,
      iter = 4000,
      seed = 42, #so the model is reproducible
      file = paste0(region, ".RDS"))
}
```

## 7.3 ToM regression models:
Run the models for the ToM network first. It will load the model if it is already calculated:
```{r}
#library("brms")
rtpj <- reg_model("rtpj")
ltpj <- reg_model("ltpj")
prec <- reg_model("prec")
vmpfc <- reg_model("vmpfc")
mmpfc <- reg_model("mmpfc")
dmpfc <- reg_model("dmpfc")
```

Get the summaries (do some wrangling):
```{r}
summary(rtpj)
summary(ltpj)
summary(prec)
summary(vmpfc)
summary(mmpfc)
summary(dmpfc)
```

Get the posterior summaries (do some wrangling):
```{r}
posterior_summary(rtpj)
posterior_summary(ltpj)
posterior_summary(prec)
posterior_summary(vmpfc)
posterior_summary(mmpfc)
posterior_summary(dmpfc)
```
Create a function for the posterior plots:
```{r}
library("bayesplot")

posterior_plots <- function(model){
  posterior <- as.matrix(model)
  plot_title <- ggtitle( "Posterior distributions for", paste(deparse(substitute(model))),
                        "with medians and 80% intervals")
  mcmc_areas(posterior, 
             pars = c("b_cent_IDAQ", "b_cent_IDAQ2"), 
             prob = 0.8) + plot_title + theme_bw()
}
```

Plot the posterior distributions
```{r}
pp_rtpj <- posterior_plots(rtpj)
pp_ltpj <- posterior_plots(ltpj)
pp_prec <- posterior_plots(prec)
pp_vmpfc <- posterior_plots(vmpfc)
pp_mmpfc <- posterior_plots(mmpfc)
pp_dmpfc <- posterior_plots(dmpfc)

pp_rtpj + pp_ltpj + pp_prec + 
  pp_vmpfc + pp_mmpfc + pp_dmpfc
```


Create plots (make some edit):
```{r}



posterior1.2.3.4.5 <- bind_rows("uninformative prior" = as_tibble(as.mcmc(model,  pars = "b_age", exact_match = TRUE ,combine_chains = TRUE)),
                                "informative prior 1" = as_tibble(as.mcmc(model2, pars = "b_age", exact_match = TRUE ,combine_chains = TRUE)),
                                "informative prior 2" = as_tibble(as.mcmc(model3, pars = "b_age", exact_match = TRUE ,combine_chains = TRUE)),
                                "informative prior 3" = as_tibble(as.mcmc(model4, pars = "b_age", exact_match = TRUE ,combine_chains = TRUE)),
                                "informative prior 4" = as_tibble(as.mcmc(model5, pars = "b_age", exact_match = TRUE ,combine_chains = TRUE)),
                                .id = "id1")

plot(conditional_effects(ltpj),points = TRUE)

posterior_plots(ltpj)
?conditional_effects
test <- as.matrix(rtpj)

library("broom")
library("rstanarm")
library("tidyverse")


fit <- stan_glm(mpg ~ ., data = mtcars)
summary(fit)
posterior <- as.matrix(fit)

plot_title <- ggtitle("Posterior distributions",
                      "with medians and 80% intervals")
mcmc_areas(posterior, 
           pars = c("cyl", "drat", "am", "wt"), 
           prob = 0.8) + plot_title

posterior <- as.matrix(test2) 
plot_title <- ggtitle("Posterior distributions",
                      "with medians and 80% intervals")
mcmc_areas(posterior, 
           pars = c("b_cent_IDAQS", "b_cent_IDAQ2S"), 
           prob = 0.8) + plot_title
summary(test2)


color_scheme_set("red")
ppc_dens_overlay(y = fit$y, 
                 yrep = posterior_predict(fit, draws = 50))

color_scheme_set("brightblue")
test %>% 
  posterior_predict(draws = 500) %>%
  ppc_stat_grouped(y = b_cent_IDAQ2S,
                   stat = "median")
plot(test2)
plot(ltpj)
plot(prec)
plot(vmpfc)
plot(mmpfc)
plot(dmpfc)
```


```{r}

pp_check(rtpj, nsamples = 100) #maximal model


library(doBy)
library(brms)
library(easystats)
library(tidyverse)

rope_range(test) # determine the ROPE range

testR <- bayestestR::equivalence_test(test, range = c(-0.1, 0.1), ci = 0.95) # assert the null
testR <- testR[-c(3),]

plot(testR) + theme_abyss() + scale_fill_flat() # plot the decision on H0


describe_posterior(
  rtpj,
  effects = "all",
  component = "all",
  test = c("p_direction", "p_significance"),
  centrality = "all"
)


library(bayestestR)

posterior <- distribution_gamma(10000, 1.5)  # Generate a skewed distribution
centrality <- point_estimate(posterior)  # Get indices of centrality
centrality
plot(centrality)
plot(rtpj)
```


# 8. IDAQ scores and Pain Matrix activity {.tabset}


## 7.1 Plot ToM and IDAQ
Create scatterplots with linear and non-linear lines: 
```{r}
p1 <- DF.roi %>%
  filter(network == "pain") %>%
  ggplot(aes(x=cent_IDAQ, y=cent_contrast)) +
  geom_point(alpha=0.5,show.legend = FALSE) +
  geom_smooth(method="lm", formula=y ~ x, se=TRUE, show.legend = FALSE, colour="#0072B2") +
  geom_smooth(method="lm", formula=y ~ x+ I(x^2), se=TRUE, show.legend=FALSE, colour = "#D55E00") +
  #coord_fixed(ratio = 25/1) +
  labs(
    x="IDAQ score",
    y="contrast (pain vs mental)"
  ) + theme_classic()

p2 <- DF.roi %>%
  filter(network == "pain") %>%
  ggplot(aes(x=cent_IDAQ, y=cent_contrast)) +
  geom_point(alpha=0.5,show.legend = FALSE) +
  geom_smooth(method="lm", formula=y ~ x, se=TRUE, show.legend = FALSE, colour="#0072B2") +
  geom_smooth(method="lm", formula=y ~ x+ I(x^2), se=TRUE, show.legend=FALSE, colour = "#D55E00") +
  #coord_fixed(ratio = 25/1) +
  labs(
    x="IDAQ score",
    y="contrast (pain vs mental)"
  ) + theme_classic() +
  facet_wrap(~roi, nrow = 2)

p1 + p2
```

## 8.2 Regression models for the Pain Matrix:
Run the models for the Pain Matrix (control network). It will load the model if it is already calculated:
```{r}
rs2 <- reg_model("rs2")
ls2 <- reg_model("ls2")
rinsula <- reg_model("rinsula")
linsula <- reg_model("linsula")
rmfg <- reg_model("rmfg")
lmfg <- reg_model("lmfg")
amcc <- reg_model("amcc")
```

```{r}
summary(linsula)
posterior_summary(linsula)
plot(linsula)
```


# 9. Control analyses {.tabset}

use the update function!

```{r}
sessionInfo()
```

1. Across all ToM ROIs
  - Compare linear model vs. quadratic model; is there evidence for one, or for Null?
  - Fit the model, predict values, test sensitivity/fit
2. For each ToM ROI
  - Compare linear model vs. quadratic model; is there evidence for one, or for Null?
  - Fit the model, predict values, test sensitivity/fit

(3. control across all ROIs - pain)
(4. control for each pain ROI)


Add seed at the end!

what is sigma

```{r}
options("scipen"=10, "digits"=5)

tidy(rtpj) %>% slice(1:3) %>% mutate_if(is.double, round, digits = 5)


DF.test <- DF.roi %>% 
  filter(roi == "rtpj")


reg.1 <- brm(formula = cent_contrast ~ cent_IDAQ + cent_IDAQ2,
             data = DF.test,
             family = gaussian)

plot(DF.test$cent_IDAQ2, DF.test$cent_IDAQ)


summary(reg.1)
plot(reg.1) 
posterior_summary(reg.1)
prior_summary(reg.1)
pairs(reg.1) #look into this
plot(conditional_effects(reg.1), points = TRUE)

roi <- "rtpj"

reg.2 <- brm(formula = cent_contrast ~ cent_IDAQ + cent_IDAQ2,
             data = DF.roi %>% filter(roi == roi),
             family = gaussian,
             chains = 4,
             iter = 4000,
             seed = 42,
             file = paste0(roi, ".RDS"))
summary(reg.2)
tidy(rtpj) %>% slice(1:3) %>% mutate_if(is.double, round, digits = 2)


library("shinystan")

launch_shinystan(reg.1)

```

```{r}
reg.2 <- brm(formula = cent_contrast ~ (cent_IDAQ + I(cent_IDAQ^2)), 
             data = DF.test)  

  print(summary(fit_lin))
    me <- marginal_effects(fit_lin, "time") %>%
      plot(plot = FALSE) %>%
      getElement(1) + 
      ylim(range(dat_tmp$rating, na.rm = TRUE) + c(-0.5, 0.5))
    plot(me)
    
    # quadratic model
    fit_quad <- run_model(
      brm(
        rating ~ (time + I(time^2)) + 
          Age + Geschlecht + Erstbehandlung + diag + 
          ((time + I(time^2)) | PATNR) + (1 | item), 
        data = dat_tmp, family = fam, 
        cores = cores, chains = chains
      ),
      path = paste0("models/fit_hyp1_", meas, "_", fam, "_quad")
    )
    print(summary(fit_quad))
    me <- marginal_effects(fit_quad, "time") %>%
      plot(plot = FALSE) %>%
      getElement(1) + 
      ylim(range(dat_tmp$rating, na.rm = TRUE) + c(-0.5, 0.5))
    plot(me)
```



```{r}
# install.packages("rstanarm") #do not selet the one that needs complilation 
library(rstan)
library(rstanarm)
library(ggplot2)
library(bayesplot)


# this option uses multiple cores if they're available
options(mc.cores = parallel::detectCores()) 

DF.test <- DF.roi %>%
  filter(roi == "rtpj")

glm_post1 <- stan_glm(cent_contrast~cent_IDAQ, data=DF.test, family=gaussian) #which family?
glm_post1 <- stan_glm(contrast~IDAQ + I(IDAQ^2), data=DF.test, family=gaussian) #does it need to be centered?

stan_trace(glm_post1, pars=c("(Intercept)","IDAQ","sigma"))
summary(glm_post1)
pp_check(glm_post1)

posterior_vs_prior(glm_post1, group_by_parameter = TRUE, pars=c("(Intercept)"))
posterior_vs_prior(glm_post1, group_by_parameter = TRUE, pars=c("cent_IDAQ","sigma"))


linear.model <-lm(DF.test$cent_contrast ~ DF.test$cent_IDAQ +I(DF.test$cent_IDAQ^2))
glm_fit <- glm(cent_contrast~cent_IDAQ +I(cent_IDAQ^2), data=DF.test, family=gaussian)
glm_fit <- glm(cent_contrast~cent_IDAQ, data=DF.test, family=gaussian)

summary(glm_fit)
summary(linear.model)

plot(DF.test$cent_contrast ~ DF.test$cent_IDAQ, pch=16, ylab = "Counts ", cex.lab = 1.3, col = "red")
abline(lm(DF.test$cent_contrast ~ DF.test$cent_IDAQ), col = "blue")


DF.test$cent_IDAQ2 <- DF.test$cent_IDAQ^2
quadratic.model <-lm(DF.test$cent_contrast ~ DF.test$cent_IDAQ + DF.test$cent_IDAQ2)
summary(quadratic.model)

idaqvalues <- seq(-40, 51, .1)
predictedcounts <- predict(quadratic.model,list(IDAQ=idaqvalues, IDAQ2=idaqvalues^2))
plot(DF.test$cent_contrast ~ DF.test$cent_IDAQ, pch=16, ylab = "Counts ", cex.lab = 1.3, col = "red")
lines(idaqvalues, predictedcounts, col = "darkgreen", lwd = 3)
```


```{r}
# OLD code: get fitted values
newdata = data.frame(dataset = levels(as.factor(DF.test$dataset)), itemnr = as.factor(DF.test$itemnr))
fit = fitted(mod1, newdata = newdata, re_formula = NA)
colnames(fit) = c('fit', 'se', 'lwr', 'upr')
df_plot = cbind(newdata, fit)
df_plot

obs = aggregate(value ~ dataset, DF.test, mean) 

ggplot(df_plot, aes(x = dataset, y = fit)) +
  geom_violin(data=DF.test, aes(x=dataset, y=value), alpha=0.5, color="gray70", fill='gray95') +
  geom_jitter(data=obs, aes(x=dataset, y=value), alpha=0.3, position = position_jitter(width = 0.07)) +
  geom_errorbar(aes(ymin=lwr, ymax=upr), position=position_dodge(), size=1, width=.5) +
  geom_point(shape=21, size=4, fill='red') +
  xlab("") +
  theme_bw () +
  theme(panel.grid = element_blank())
```




